(a) Carbohydrates and fats
(b) Proteins and mineral salts
(c) Vitamins and minerals
(d) Water and roughage
2. In which mode of nutrition an organism de-rives its food from the body of another living organism without killing it?
(a) Saprotrophic nutrition
(b) Parasitic nutrition
(c) Holozoic nutrition
(d) Autotrophic nutrition
3. The mode of nutrition found in fungi is:
(a) Parasitic nutrition
(b) Holozoic nutrition
(c) Autotrophic nutrition
(d) Saprotrophic nutrition
4. Roots of the plants absorb water from the soil through the process of:
(a) diffusion
(b) transpiration
(c) osmosis
(d) None of these
5. The site of photosynthesis in the cells of a leaf is
(a) chloroplast
(b) mitochondria
(c) cytoplasm
(d) protoplasm
6. In amoeba, food is digested in the:
(a) food vacuole
(b) mitochondria
(c) pseudopodia
(d) chloroplast
7. Which of the following events in the mouth cavity will be affected if salivary amylase is lacking in the saliva?
(a) Starch breaking down into sugars.
(b) Proteins breaking down into amino acids.
(c) Absorption of vitamins.
(d) Fats breaking down into fatty acids and glycerol.
8. Which region of the alimentary canal absorbs the digested food?
(a) Stomach
(b) Small intestine
(c) Large intestine
(d) Liver
9. The contraction and expansion movement of the walls of the food pipe is called:
(a) translocation
(b) transpiration
(c) peristaltic movement
(d) digestion
10. When a few drops of iodine solution are added to rice water, the solution turns blue- black in colour. This indicates that rice water contains:
(a) fats
(b) complex proteins
(c) starch
(d) simple proteins
11. The exit of unabsorbed food material is regu-lated by
(a) liver
(b) anus
(c) small intestine
(d) anal sphincter
12. What are the products obtained by anaerobic respiration in plants?
(a) Lactic acid + Energy
(b) Carbon dioxide + Water + Energy
(c) Ethanol + Carbon dioxide + Energy
(d) Pyruvate
13. The breakdown of pyruvate to give carbon di-oxide, water and energy takes place in
(a) cytoplasm
(b) mitochondria
(c) chloroplast
(d) nucleus
14. Glycolysis process occurs in which part of the cell?
(a) Cytoplasm
(b) Nucleus
(c) Mitochondria
(d) Chloroplast
15. Name the substances whose build up in the muscles during vigorous physical exercise may cause cramps?
(a) Ethanol + Carbon dioxide + Energy
(b) Lactic acid + Energy
(c) Carbon dioxide + Water + Energy
(d) Pyruvate
16. Name the pores in a leaf through which respi-ratory exchange of gases takes place.
(a) Lenticels
(b) Vacuoles
(c) Xylem
(d) Stomata
17. The respiratory pigment in human beings is:
(a) carotene
(b) chlorophyll
(c) haemoglobin
(d) mitochondria
18. Which plant tissue transports water and min-erals from the roots to the leaf?
(a) Xylem
(b) Phloem
(c) Parenchyma
(d) Collenchyma
19. The movement of food in phloem is called:
(a) transpiration
(b) translocation
(c) respiration
(d) evaporation
20. A blood vessel which pumps the blood from the heart to the entire body:
(a) artery
(b) capillary
(c) Vein
(d) Haemoglobin
21. Name a circulatory fluid in the human body other than blood.
(a) Platelets
(b) RBC
(c) Lymph
(d) Plasma
22. Single circulation, i.e., blood flows through the heart only once during one cycle of passage through the body, is exhibited by which of the following:
(a) hyla, rana, draco
(b) whale, dolphin, turtle
(c) labeo, chameleon, salamander
(d) hippocampus, exocoetus, anabas
23. Name the tube which connects the kidneys to the urinary bladder.
(a) Urethra
(b) Nephron
(c) Tubule
(d) Ureter
24. Which part of nephron allows the selective reabsorption of useful substances like glucose, amino acids, salts and water into the blood capillaries?
(a) Tubule
(b) Glomerulus
(c) Bowman’s capsule
(d) Ureter
25. Where is the dirty blood in our body filtered?
(a) Heart
(b) Lungs
(c) Ureter
(d) Kidneys
26. The procedure used for cleaning the blood of a person by separating urea from it is called:
(a) osmosis
(b) filtration
(c) dialysis
(d) double circulation
27. Which is the correct sequence of body parts in the human alimentary canal?
(a) Mouth → stomach → small intestine → large intestine → oesophagus
(b) Mouth → oesophagus → stomach → small intestine → large intestine
(c) Mouth → stomach → oesophagus → smallintestine → large intestine
(d) Mouth → oesophagus → stomach → large intestine → small intestine
28. Identify the correct path of urine in the human body.
(a) Kidney → urinary bladder → urethra → ureter
(b) Urinary bladder → ureter → kidney → urethra
(c) Kidney → ureter → urethra → urinary bladder
(d) Kidney → ureter → urinary bladder → urethra
29. The exit of food from the stomach is regulated by a ………. muscle.
30 ………. is the longest part of the alimentary canal.
31. The process of breakdown of glucose, (a six-carbon molecule) into pyruvate, (a three-carbon molecule), takes place in the ………. .
32. ………. is the site of the complete digestion of carbohydrates, proteins and fats.
33. Breaking of pyruvate using oxygen takes place in the ………. .
34. Rings of cartilage are present in the wind pipe to ensure that the ………. .
35. The blood has ………. cells which plug the leakage in the vessels by helping to clot the blood at the point of injury.
36. ………. transports products of photosynthesis from the leaves to other parts of the plant
37- In which group of the organisms the food material is broken down outside the body?
A) Mushroom, green plants, amoeba
B) Yeast, mushroom, bread mould
C) Paramecium, amoeba, cuscuta
D) Cuscuta, lice, tapeworm
38. Select the correct statement –
A) Heterotrophs make their food
B) Heterotrophs utilize solar energy to make food
C) Heterotrophs do not make their own food
D) Heterotrophs are capable of converting carbon dioxide and water into carbohydrates
39- Which of the following statements about autotrophs is incorrect?
A) They synthesize carbohydrates by using carbon dioxide, water in presence of sunlight and chlorophyll
B) They store carbohydrates in form of starch
C) They convert carbon dioxide and water into carbohydrates in the absence of sunlight
D) They form the first trophic level in the food chain
40 Which of these reactions occur in photosynthesis?
A) Carbon dioxide is reduced and water is oxidised (Carbon dioxide + water + energy from light produces glucose and oxygen)
B) water is reduced and carbon dioxide is oxidised
C) carbon dioxide and water are oxidised
D) carbon dioxide and water are reduced
41- A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates rice water has –
A) complex proteins
B) simple proteins
C) starch
D) Fats
42- Which is the correct sequence –
A) mouth → stomach → small intestine → oesophagus → large intestine
B) mouth → oesophagus → stomach → large intestine → small intestine
C) mouth → stomach → oesophagus → small intestine → large intestine
D) mouth → oesophagus → stomach → small intestine → large intestine
43- If salivary amylase is lacking in saliva, which of the event in mouth will be affected-
A) Proteins breaking down into amino acids
B) starch breaking down into sugars
C) Fats breaking down into fatty acids and glycerol
D) Absorption of vitamins
44- The inner lining of the stomach is protected by one of the following from hydrochloric acid. Choose the correct one –
A) Mucus
B) Salivary amylase
C) Pepsin
D) Bile
45- Which part of the alimentary canal receives bile from the liver –
A) stomach
B) small intestine
C) large intestine
D) oesophagus
46- In which part of alimentary canal food is finally digested?
A) large intestine
b) Stomach
C) Mouth cavity
D) small intestine
47- Choose the function of pancreatic juice from the following :
A) Trypsin digests proteins and lipase digests carbohydrates
B) Trypsin digests emulsified fats and lipase digests proteins
C) Trypsin and lipase digest fats
D) Trypsin digests proteins and lipase digests emulsified fats
48- The correct sequence of anaerobic respiration –
A) Glucose → pyruvate → lactic acid
B) Glucose → Pyruvate → Ethanol + Carbon-Dioxide
C) glucose → pyruvate → ADP→ lactic acid
D) glucose -→ pyruvate → carbon dioxide + ethanol + energy
49- The pancreatic juice doesn’t contain the following enzymes-
A) Trypsin
B) Amylase
C) Lipase
D) Ptyalin
50- The pancreas pour their secretion into ___.
A) Small intestine
B) large intestine
C) stomach
D) Duodenum
51.The kidneys in human beings are part of ______.
A) Nutrition
B) Respiration
C) Excretion
D) Circulation
52- The opening and closing of stomatal pore depends upon ___.
A) Oxygen
B) Guard Cells
C) concentration of carbon dioxide in stomata
D) temperature
53. In the human digestion system, the enzymes pepsin and trypsin are secreted by?
A) Pancreas and liver
B) pancreas and gall bladder
C) stomach and pancreas
D) stomach and salivary glands
54. Which of the statements is correct regarding bile?
A) secreted by duct and stored in liver
B) secreted by liver and stored in bile duct
C) Secreted by Liver and Stored in Gall Bladder
D) secreted by gall bladder and stored in liver
0 55.- Which of the following components of food is digested by s. amylase?
A) proteins
B) fats
C) Minerals
D) carbohydrates
56- Where are proteins first digested?
A) small intestine
B) stomach
C) large intestine
D) mouth
57- Which is the first enzyme that mixes with food?
A) s.amylase
B) trypsin
C) erepsin
D) gastric juice
58- The cellular energy reserves in autotrophs are____.
A) glycogen
B) starch
C) protein
D) fatty acids
59- The autotrophs require ____.
A) CO2 and water
B) chlorophyll
C) sunlight
D) All
60- The breakdown of pyruvate into carbon dioxide, energy and water takes place in _____.
A) mitochondria
B) cytoplasm
) Endoplasmic reticulum
D) ribosomes
61.When air is blown through lime water it turns milky because of ______.
A) water
B) carbon dioxide
C) limestone
D) calcium oxide
62. Write the correct sequence of air passage involved in inhalation?
A) larynx→ Nostrils → Pharynx → lungs
B) nostrils→ Pharynx→ larynx→ Trachea → alveoli
C) nasal passage → larynx → Trachea → Pharynx→ Alveoli
D) None
63. During respiration exchange of gases takes place in _____.
A) Trachea and larynx
B) alveoli of lungs
C) Alveoli and throat
D) Throat and larynx
64.What prevents back flow of blood during contraction?
A) Valves in heart
B) Thick muscular walls of ventricles
C) Thin walls of atria
D) All
65. The correct path of urine is __.
A) Kidney→ ureter → urthra→ urinary bladder
B) Kidney → urinary bladder → urethra → ureter
C) kidney→ ureter → urinary bladder→ urethra
D) urinary bladder → kidney → ureter →urethra
66. During deficiency of oxygen in tissues of humans, pyruvic acid is converted into lactic acid in____.
A) Cytoplasm
B) chloroplast
C) mitochondria
D) golgi body
68 Xylem helps in ___.
A) transportation of water
B) translocation of food
C) both a and b
D) transportation of water and minerals
69.- What is the approximate length of an alimentary canal?
A) 3m
B) 4m
C) 5m
D) 9m
70. Which organelle is called powerhouse of the cell?
A) Mitochondria
B) golgi body
C) ribosomes
D) none
71.- Which respiration is much efficient?
A) aerobic
B) anaerobic
C) both are equal
D) none
72.- Write full form of ATP.
A) adenosine diphosphate
B) adenosine phosphate
C) adenosine triphosphate
D) none
73.Which of the following statement(s) is (are) true about respiration?
A) During inhalation, ribs move inward and the diaphragm is raised
B) In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and carbon dioxide from blood into alveolar air sacs
C) Haemoglobin has greater affinity for carbon dioxide than oxygen Alveoli does not help in increasing surface area for exchange of gases
D) None
74.- During respiration exchange of gases takes place in___.
A) Trachea and larynx
B) Alveoli of lungs
C) Alveoli and throat
D) Throat and larynx
75. Which of the following statement (s) is (are) true about heart?
A) Left atrium receives oxygenated blood from different parts of body while right atrium receives deoxygenated blood from lungs
B) Left ventricle pumps oxygenated blood to different body parts while right ventricle pumps deoxygenated blood to lungs
C) Left atrium transfers oxygenated blood to the right ventricle which sends it to different body parts
D)Right atrium receives oxygenated blood from different parts of the body while left ventricle pumps oxygenated blood to different parts of the body.
76.Single circulation i.e., blood flows through the heart only once during one cycle of passage through the body, is exhibited by____.
A) Labeo, Chameleon, Salamander
B) Hippocampus, Exocoetus, Anabas
C) Hyla, Rana, Draco
D) Whale, Dolphin, Turtle
77. Choose the correct statement that describes arteries:
• A) They have thick elastic walls, blood flows under high pressure; collect blood from different organs and bring it back to the heart
• B) They have thin walls with valves inside, blood flows under low pressure and carry blood away from the heart to various organs of the body
• C) They have thick elastic walls, blood flows under low pressure; carry blood from the heart to various organs of the body
• D) They have thick elastic walls without valves inside. The Blood flows under high pressure and carry blood away from the heart to different parts of the body
78.The filtration units of the kidney are called ___.
A) urethra
B) ureter
C) Neuron
D) nephron
79. Oxygen released during photosynthesis comes from_____.
A) water
B) Chlorophyll
C) carbon dioxide
D) glucose
80. The blood leaving the tissues becomes rich in _____.
A) Haemoglobin
B) carbon dioxide
C) water
D) oxygen
81. Which of the following is incorrect statement:
A) organism grow with time
B) Organisms must repair and maintain their structure
C) Movement of molecules does not take place among cells
D) Energy is essential for life processes
82. The internal (cellular) energy reservoir in autotrophs is:
A) glycogen
B) protein
C) starch
D) fatty acid
83.- Choose the event that does not occur in photosynthesis?
A) Absorption of light energy by chlorophyll
B) Reduction of carbon dioxide to carbohydrates
C) Oxidation of carbon to carbon dioxide
D) Conversion of light energy to chemical energy
84. Choose the form in which most of the plants absorb nitrogen from the atmosphere ?
A) proteins
B) nitrates and nitrites
C) atmospheric nitrogen
D) amino acids
85.Which process converts light energy to chemical energy ?
A) Respiration
B) photosynthesis
C) transpiration
D) transportation of water and minerals
86. Which of these is the simplest form of food ?
A) rice
B) wheat
C) Butter
D) Glucose
87.Which out of them is raw material for photosynthesis ?
A) carbon dioxide
B) water
C) oxygen
D) both A and B
88. Which of the following is not a digestive enzyme contained in the pancreatic juice?
i. Lipase
ii. Hydrochloric acid
iii. Mucus
iv. Trypsin
a) (i) and (ii)
b) (i) and (iv)
c) (ii) and (iii)
d) (i) and (iii)
89. The enzymes pepsin and trypsin are secreted respectively by
a) Stomach and pancreas
b) Salivary gland and stomach
c) Liver and pancreas
d) Liver and salivary gland
90.Among the following choose the correct option which includes the organisms that have a holozoic mode of nutrition:
a) Plasmodium and Amoeba
b) Parakeet and Amoeba
c) Paramecium and Plasmodium
91 Raw materials required in the autotrophic mode of nutrition involves:
i. Carbon dioxide and water
ii. Chlorophyll
iii. Nitrogen
iv. Sunlight
a) (i), (ii) and (iii)
b) (i) and (ii)
c) (i), (ii) and (iv)
d) All (i), (ii), (iii) and (iv)
92. The enzymes contained in pancreatic juices help in the digestion of:
a) Fats and carbohydrates
b) Proteins and fats
c) Proteins and carbohydrates
d) Proteins, fats and carbohydrates
93.Which of the following help in protecting the inner lining of the stomach from the harmful effect of hydrochloric acid?
a) Mucus
b) Pepsin
c) Trypsin
d) Bile
94.. Sometimes we get painful cramps in our leg muscles after running for a long time due to the accumulation of:
a) Hydrochloric acid
b) Fat
c) Carbon dioxide
d) Lactic acid
95.The vein which brings clean blood from the lungs into the heart is known as:
a) Pulmonary vein
b) Hepatic vein
c) Superior vena cava
d) Pulmonary artery
96.. Movement of the synthesized products from the leaves to the roots and other parts of a plant’s body takes place through the phloem. This process is known as:
a) Translocation
b) Transpiration
c) Transportation
d) Excretio
97.The process of diffusion of solvent particles from the region of less solute concentration to a region of high solute concentration through semi-permeable membrane is known as
a) Diffusion
b) Osmosis
c) Translocation
d) Transpiration
98 Which among the following procedures is used for cleaning the blood of a person by separating the waste substance from it?
a) Kidney transplant
b) Blood transfusion
c) Dialysis
d) Hydrolysis
99. The excretory unit of the human excretory system is known as:
a) Nephridia
b) Neuron
c) Nephron
d) kidneys
100. Plants use the energy stored in ATP to accomplish the process of transportation of:
a) Water and minerals
b) Oxygen
c) Water, minerals and food
d) Food
101.Which among the following is necessary to carry out the blood coagulation in a cut or wound?
a) White Blood Cells
b) Blood plasma
c) Platelets
d) Red blood cells
102. Arteries and veins are connected by a network of extremely narrow tubes called:
a) Sieve tubes
b) Capillaries
c) Vena cava
d) Valves
103) In amoeba, food is digested in the:
(a) food vacuole
(b) mitochondria
(c) pseudopodia
(d) chloroplast
104) In which of the following groups of organisms, food materials are broken down outside the body and absorbed?
(a) Mushroom, green plants, Amoeba
(b) Yeast, mushroom, bread mould
(c) Paramecium, Amoeba, Cuscuta
(d) Cuscuta, lice, tapeworm
105) Which of the equations show correct conversion of CO2 and H2O into carbohydrates in plants?
106. Which of the following is the important characteristic of Emphysema:
(a) Destruction of the alveolar wall and air sacs in the lungs are damaged.
(b) Increase in the growth of the lung tissue.
(c) Inflammation in the wall of bronchi.
(d) Thickening of the artery walls of the lungs.
107) The image shows the bread moulds on a bread
How do these funrgi obtain nutrition?
(a) by eating the bread on which it is growing
(b) by using nutrients from the bread to prepare their own food
(c) by breaking down the nutrients of bread and then absorbing them
(d) by allowing other organisms to grow on the bread and then consuming
108) The characteristic processes observed in anaerobic respiration are
i) presence of oxygen
ii) release of carbon dioxide
iii) release of energy
iv) release of lactic acid
(a) i), ii) only
(b) i), ii), iii) only
(c) ii), iii), iv) only
(d) iv) only
109) The opening and closing of the stomatal pore depends upon
(a) Oxygen
(b) temperature
(c) water in the guard cells
(d) concentration of CO2
110) The image shows how Amoeba obtains nutrition.
How is this process advantageous for Amoeba?
(a) capturing of food takes less time
(b) complex food can be digested easily
(c) more amount of food can be consumed
(d) fast distribution of nutrition within the body
111) A plant gets rid of excess water through transpiration. Which is a method used by plants to get rid of solid waste products?
(a) shortening of stem
(b) dropping down of fruits
(c) shedding of yellow leaves
(d) expansion of roots into the soil
112) Chemicals present in the tobacco smoke lead to the breakdown of the elastic tissue in the alveoli. Name this specific condition.
(a) Heart disease
(b) Emphysema
(c) Bronchitis
(d) Lung cancer
113. Digestion of food starts from which organ of the human digestive system?
(a) mouth due to the presence of saliva
(b) oesophagus that moves the food in gut
(c) that releases juices for fat breakdown
(d) which helps in mixing food with digestive juices
114. The chlorophyll in photosynthesis is used for
I. Absorbing light
II. Breaking down water molecule
III. No function
IV. Reduction of CO2
115. Proteins after digestion are converted into
I. Carbohydrates
II. Small globules
III. Amino acids
IV. starch
116. Carbohydrates in the plants are stored in the form of
I. Glycogen
II. Starch
III. Glucose
IV. Maltose
117. Main site of photosynthesis
I. Leaf
II. Stem
III. Chloroplast
IV. Guard cells
118. The small pores present of leaf’s surface are called
I. Stomata
II. Chlorophyll
III. Guard cells
IV. None of these
119. Photosynthesis is a
I. Catabolic process
II. Parabolic process
III. Amphibolic process
IV. Photochemical lprocess
120. Opening and closing of pores is a function performed by
I. Stomata
II. Chlorophyll
III. Chloroplast
IV. Guard cells
121 Which element is used in the synthesis of proteins?
I. Hydrogen
II. Oxygen
III. Nitrogen
IV. Carbon dioxide
122. Temporary finger like extensions on amoeba are called
I. Cell membrane
II. Cell wall
III. Pseudopodia
IV. Cilia
123. Bile juice is secreted by
I. Stomach
II. Pancreas
III. Small intestine
IV. Liver
124. Which of these juices is secreted by pancreas?
I. Trypsin
II. Pepsin
III. Bile juice
IV. Both I and II
125. Lipase acts on
I. Amino acids
II. Fats
III. Carbohydrates
IV. All of these
126. Respiratory pigment in human body is
I. Chlorophyll
II. Water
III. Blood
IV. haemoglobin
127. Blood consist of what fluid medium?
I. Lymph
II. Platelets
III. Plasma
IV. All of these
128. One cell-thick vessels are called
I. Arteries
II. Veins
III. Capillaries
IV. Pulmonary artery
129.The enzyme responsible for the digestion of proteins in the small intestine is:
(a) Pepsin
(b) Trypsin
(c) Amylase
(d) Lipase
129.The part where the exchange of gases occurs during respiration is:
(a) Lungs and larynx
(b) Alveoli and throat
(c) Throat and lungs
(d) Alveoli and capillaries
130.The back flow of blood during the pumping of blood by heart is prevented by:
(a) Walls of ventncles
(b) Walls of atrium
(c) Valves in heart
(d) Walls between atria and
131.The process of digestion is completed by:
(a) Intestinal juice
(b) trypsin
(c) bile juice
(d) pepsin
132.The extracellular fluid released from the capillaries is:
(a) serum
(b) plasma
(c) lymph
(d) mucus
133.A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains
(a) complex proteins
(b) simple proteins
(c) fats
(d) starch
134.In which part of the alimentary canal food is finally digested?
(a) Stomach
(b) Mouth cavity
(c) Large intestine
(d) Small intestine
135.When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of
(a) oxygen
(b) carbon dioxide
(c) nitrogen
(d) water vapour
136.What prevents backflow of blood inside the heart during contraction?
(a) Valves in heart
(b) Thick muscular walls of ventricles
(c) Thin walls of atria
(d) All of the above
137.In which of the following vertebrate group/groups, heart does not pump oxygenated blood to different parts of the body?
(a) Pisces and amphibians
(b) Amphibians and reptiles
(c) Amphibians only
(d) Pisces only
138.Which of the following equations is the summary of photosynthesis?
(a) 6CO2 + 12H2O → C6H12O6 + 6O2 + 6H2O
(b) 6CO2 + H2O + Sunlight → C6H12O6 + O2 + 6H2O
(c) 6CO2 + 12H2O + Chlorophyll + Sunlight → C6H12O6 + 6O2 + 6H2O
(d) 6CO2 + 12H2O + Chlorophyll + Sunlight → C6H12O6 + 6CO2 +6H20
139.Which is the first enzyme to mix with food i the digestive tract?
(a) Pepsin
(b) Cellulose
(c) Amylase
(d) Trypsin
140.Lack of oxygen in muscles often leads to cramps among cricketers. This results due to
(a) conversion of pyruvate to ethanol
(b) conversion of pyruvate to glucose
(c) non conversion of glucose to pyruvate
(d) conversion of pyruvate to lactic acid
141.Choose the correct path of urine in our body
(a) kidney → ureter → urethra → urinary bladder
(b) kidney → urinary bladder → urethra → ureter
(c) kidney → ureters → urinary bladder → urethra
(d) urinary bladder → kidney → ureter → urethra
142.. More energy is made available to the organims by the …………… respiration.
143 . Plants store most of their wastes in the membrane hound structures called …………… present in their cells.
144. Plants can get rid of excess water by ……………
145. Artificial kidney is a device which carries out …………… to remove nitrogenous waste products from the blood.
146. The tubular parts of the nephron selectively …………… the substances needed by the body.
147. The purpose of making …………… is to filter out harmful nitrogenous waste products from the blood.
148. The osmotic pressure in phloem increases on transfer of …………… into it from the leaves.
149. The major driving force for the water in the xylem during day time is the ……………
150.Water conducting channels are formed by the …………… and the …………… of the xylem tissue.
151.Some amount of plasma, proteins and blood cells escape from …………… the wall into intercellular spaces in the tissues to form the tissue fluid or lymph.
152. Fishes have a heart with …………… chambers while the amphibians have …………… chambers in their heart.
153. Capillaries join together to form …………… that convey the blood away from the organ or tissue.
154. Veins have …………… to ensure that the blood flows through them only in one direction.
155 To ensure a sufficient time for oxygen to be absorbed and for the carbon dioxide to be released lungs contain a …………… of air.
156. A respiratory pigment called …………… has a high affinity for oxygen and helps to transport oxygen to various parts of our body.
157. The build-up of …………… during …………… respiration is the cause of muscular cramps.
158. The wall of small intestine has …………… which help in absorption of digested food.
159. Pancreatic juice contains trypsin for digesting …………… and …………… for breaking down emulsified fats.
160. The saliva has …………… to help in the digestion of starch present in the food.
161.. Autotrophic organisms include
(a) bacteria and virus
(b) bacteria and fungi
(c) green plants and some bacteria
(d) green plants and all bacteria
162. A gland not associated with the alimentary canal is
(a) liver
(b) salivary glands
(c) pancreas
(d) adrenal
163. Which of the following are chiefly digested in the stomach?
(a) Carbohydrates
(b) Proteins
(c) Lipids
(d) Fats
164. From the given picture of the digestive system, identify the part labelled as gastric gland.
(a) A
(b) B
(c) C
(d) D
165. Large intestine in man mainly carries out
(a) absorption
(b) assimilation
(c) digestion of fats
(d) digestion of carbohydrates
166. The part of the digestive system where no digestion takes place is
(a) ileum
(b) stomach
(c) mouth
(d) oesophagus
167 The fermentation of glucose by yeast normally yields
(a) alcohol, CO2 and 36 ATP
(b) CO2, H20 and 36 ATP
(c) alcohol, CO2 and 2ATP
(d) lactic acid, CO7 and 2 ATP
168 A large quantity of one of the following is removed from our body by lungs:
(a) CO2 and H20
(b) CO2 only
(c) FLO only
(d) ammonia
169.In respiration, air passes through
(a) Pharynx → nasal cavity → larynx → trachea bronchi → bronchioles
(b) Nasal cavity → pharynx → larynx → trachea → bronchi → bronchioles
(c) Larynx → nasal cavity’ → pharynx → trachea
(d) Larynx → pharynx trachea → lungs
170.A biochemical compound that readily combines with oxygen and distributes it throughout the human body is
(a) water
(b) urea
(c) haemoglobin
(d) acetylcholine
171. The process in which loss of water takes place in the form of water vapour through stomata is called
(a) transportation
(b) transpiration
(c) guttation
(d) translocation
172.In a closed circulatory system, blood is completely enclosed within
(a) vessels
(b) heart
(c) skeleton
(d) sinuses
173. Normal blood pressure (systolic/diastolic) is
(a) 120/80 mm of Hg
(b) 160/80 mm of Hg
(c) 120/60 mm of Hg
(d) 180/80 mm of Hg
174.. Blood pressure is measured by an instrument called
(a) barometer
(b) sphygmomanometer
(c) photometer
(d) manometer
175. Which of the following statements is not correct?
(a) Deoxygenated blood is poured into right atrium of heart.
(b) The excretory units of flatworms are flame cells.
(c) Human kidney has about 1 million nephridia
(d) Tracheids and vessels are non-living conducting tissues.
176.. Which part of alimentary canal receives bile from the liver? [NCERT Exemplar Problems]
(a) Stomach
(b) Small intestine
(c) Large intestine
(d) Oesophagus
177. When air is blown from mouth into a test-tube containing lime water, the lime water turns milky due to the presence of [NCERT Exemplar Problems]
(a) oxygen
(b) carbon dioxide
(c) nitrogen
(d) water vapour
178.. The filtration units of kidneys are called [NCERT Exemplar Problems]
(a) ureter
(b) urethra
(c) neurons
(d) nephrons
179. Oxygen liberated during photosynthesis comes from [NCERT Exemplar Problems]
(a) water
(b) chlorophyll
(c) carbon dioxide
(d) glucose
180. The opening and closing of the stomatal pore depends upon [NCERT Exemplar Problems]
(a) oxygen
(b) temperature
(c) water in guard cells
(d) concentration of CO2 in stomata
181. Assertion: When air is passed through lime water, lime water turns milky.
Reason: Air contains 78% nitrogen and 21% oxygen.
182 Assertion: Veins have thin walls to collect blood from different organs.
Reason: Blood in veins are not under pressure.
183. Assertion: Human being has a complex respiratory system.
Reason: Human skin is impermeable to gases.
183. Assertion: All proteins in our food are digested in small intestine only.
Reason: The protein digesting enzymes are released onto small intestine.
184. Assertion: Human heart does not allow mixing of oxygen reach blood with carbon dioxide reach blood.
Reason: Human heart has different chambers.
185 The _____________ is where the respiratory and digestive passage come together.
186. The conditions necessary for photosynthe-sis to take place are _____________ , _____________ , _____________ and _____________ .
187. The process in which the digested food passes through the intestinal wall into blood stream is called ________ .
188. The teeth covered with a sticky, yellowish layer of food particles and bacteria is called _____________
189. Iodine turns blue-black on reacting with _____________ .
190. The energy produced during respiration is stored in the form of ATP which stands for _____________
191. Pyruric acid is a three carbon compound which is also known as _____________ .
192.. The rate of breathing in _____________ animals in much faster than in _____________ animals.
193.. The actual exchange of gases takes place in the _____________ of the lungs
194. _____________ are long, thin, spindle shaped cell with pits in their thick cell walls.
195 The liqid part of blood is called _____________ .
196. The expansion of an artery each time the blood is forced into it, is called _____________ .
197. Gums and resins are the _____________ products of plants.
198. Glomerulus acts as a dialysis bag. [True/ False]
199. Bowman’s capsule is found in heart. [True/False]
200. Peristaltic movement of muscles occurs in the mouth to push food into alimentary canal. [True/False]
201. The release of energy in aerobic process is less than in anaerobic process. [True/False
202.Before testing for starch, chlorophyll has to be removed from the leaf as it interferes in the test for starch due to its green colour. [True/False
203.. The process in which the absorbed food is taken in by body cells and used for energy, growth and repair is called egestion. [True/False]
204. The length of small intestine in a human adult is about 3.5 m. [True/False]
205. Carbohydrates are the components of our food which is digested by an enzyme which is present in saliva as well as in pancreatic juice. [True/False]
206.Cytoplasm are the sites of aerobic respiration in the cells. [True/False]
207. The respiration in plants occurs at a fast rate whereas the respiration in animals occur at a much slower rate. [True/False
208.. The exit of food from the stomach is regulated by a ………. muscle.
209. ………. is the longest part of the alimentary canal.
210. The process of breakdown of glucose, (a six-carbon molecule) into pyruvate, (a three-carbon molecule), takes place in the ………. .
211 ………. is the site of the complete digestion of carbohydrates, proteins and fats.
212. Breaking of pyruvate using oxygen takes place in the ………. .
213.. Rings of cartilage are present in the wind pipe to ensure that the ………. .
214. The blood has ………. cells which plug the leakage in the vessels by helping to clot the blood at the point of injury.
215. ………. transports products of photosynthesis from the leaves to other parts of the
216. The processes which together perform the maintenance job are
(A)Life proceedings
(B) life processes
(C) life maintenance
(D)None of the above
217 The process of acquiring Oxygen from outside the body and to use it in the
process of breakdown of food sources for cellular needs is called
(A)Respiration (B)Digestion (C)Transportation (D) Excretion
218. The waste products removed from the body and discarded by a process is called
(A) Respiration (B)Digestion (C)Transportation (D) Excretion
219. Following are autotrophs
(A)Green plants (B)Some bacteria (C) Enzymes (D) Both A and B
220. Following is true for heterotrophs
(A)Heterotrophs survival depends directly or indirectly on autotrophs
(B)Heterotrophic organisms include animals and fungi
(C)In heterotrophs, complex substances have to be broken down into simpler
ones
(D)All of the above
221. Carbon and energy requirements of the autotrophic organism are fulfilled by
(A)enzymes (B)photosynthesis (C)bacteria (D)none of the above
222 _____ are utilised for providing energy to the plant
(A)carbohydrates (B)vitamins (C)proteins (D)fats
223. The following event(s) occur during photosynthesis
(A)Absorption of light energy by chlorophyll
(B)Conversion of light energy to chemical energy
(C)Reduction of carbon dioxide to carbohydrates
(D)All of the above
224.Chlorophyll is contained in
(A)leaf (B)stem (C)roots (D)both (A) and (B)
225.. Tiny pores present on the surface of the leaves are known as
(A)stomata (B)chloroplast (C)organelles (D)none of the above
226. Following used in photosynthesis is taken up from the soil by the roots in terrestrial plants
(A)water (B)nitrogen (C)magnesium (D)all of the above
227.. Example(s) of some organism(s) break-down the food material outside the body
and then absorb it
(A)fungi (B)yeast (C)mushrooms (D)all of the above
228.. Example(s) of some organisms which derive nutrition from plants or animals
without killing them
(A)cuscuta (B)ticks (C)leeches (D)all of the above
229. _____ takes in food using temporary finger-like extensions of the cell surface.
(A)Amoeba (B)green plants (C)tape worms (D)none of the above
230. The _____ is basically a long tube extending from the mouth to the anus.
(A)Alimentary canal (B)oesophagus (C)diaphragm (D)bile duct
231 Gastric glands release ____, a protein digesting enzyme called pepsin, and
mucus.
(A)Sulphuric acid (B)hydrochloric acid (C)nitric acid (D)none of the above
232. Following has shorter small intestine.
(A)Herbivores (B)carnivores (C)both (A) and (B) (D)none of the above
233. The enzymes present in secrete intestinal juice finally convert the
(A)Proteins to amino acids
(B)Complex carbohydrates into glucose
(C)Fats into fatty acids and glycerol
(D)All of the above
234. The inner lining of the small intestine has numerous finger-like projections
called
(A)Vitli (B)villi (C)vipli (D)none of the above
235.. Glucose is a _____ carbon molecule.
(A)Four (B)five (C)six (D)seven
236. Pyruvate is a _____ carbon molecule
(A)three (B)four (C)five (D)six
237. The process of breaking molecules in the absence of oxygen is called
(A)Respiration (B)aerobic respiration (C)anaerobic respiration (D)none of the
above
238. Lactic acid is a ____ carbon molecule
(A)Three (B)four (C)five (D)six
239. Breaking down of glucose in the presence of oxygen produces
(A)Carbon dioxide (B)water (C)energy (D)all of the above
240.The energy released during the process of respiration is used to make an _____
molecule.
(A)ATP (B)ADP (C) AVP (D) ATC
241. ATP can be used in the cells for the
(A)Contraction of muscles
(B)protein synthesis
(C)conduction of nervous impulses
(D)all of the above
242.Following is true about lungs
A)Within the lungs, the passage divides into smaller and smaller tubes
(B)The lungs always contain a residual volume of air so that there is sufficient
time for oxygen to be absorbed
(C)Both (A) and (B)
(D)None of the above
243. In human beings, the respiratory pigment is
(A)Hemoglobin (B)insulin (C)enzyme (D)none of the above
244. Haemoglobin is present in
(A)Red blood corpuscles
(B)White blood corpuscles
(C)Plasma
(D)None of the above
245.. Plasma transports _____ in dissolved form
(A)Food (B)carbon dioxide (C)nitrogenous wastes (D)all of the above
246. Following has to be transported by the blood
(A)Oxygen (B)carbon dioxide (C)both (A) and (B) (D)none of the above
247. Following is (are) true about heart
(A)Oxygen-rich blood from the lungs comes to the left atrium
(B)De-oxygenated blood comes from the body to the upper chamber on the right,
the right atrium, as it relaxes.
(C)Valves ensure that blood does not flow backwar
248. Amphibians or many reptiles have _____ - chambered hearts
(A)One (B)two (C)three (D)four
249. The normal systolic pressure is about ____mm of Hg and diastolic pressure is
____ mm of Hg.
(A)100,60 (B)120,80 (C)140,100 (D)160,120
250. Blood pressure is measured with an instrument called
(A)Manometer (B)sphygmomanometer (C)hydrometer (D)anemometer
251. ____ are the vessels which carryblood away from the heart to various organs of
the body
(A)Veins (B)spines (C)arteries (D)none of the above
252.Following is true for tissue fluid or lymph
(A)It is similar to the plasma of blood
(B)It is colorless
(C)It contains less protein
(D)All of the above
253.Following is true for plants
(A)Plants have low energy needs
(B)The xylem moves water and minerals obtained from the soil
(C)Phloem transports products of photosynthesis from the leaves to other parts of
the plant
(D)All of the above
254.. The loss of water in the form of vapour from the aerial parts of the plant is
known as
(A)Transpiration (B)respiration (C)transportation (D)none of the above
255. The transport of soluble products of photosynthesis is called
(A)Transpiration (B)respiration (C)transportation (D)translocation
256.The excretory system of human beings includes
(A)A pair of kidneys
(B)A pair of ureters
(C)A urinary bladder and a urethra
(D)All of the above
257. Following is true
(A)CO2 is removed from the blood in the lungs
(B)Nitrogenous waste such as urea or uric acid are removed from blood in the
kidneys
(C)The purpose of making urine is to filter out waste products from the blood
(D)All of the above
258.The kidney is associated with the cup-shaped end of a coiled tube called
(A)Glomerulus (B)Bowman’s capsule (C)collecting duct (D)none of the above
259.Each kidney has large numbers of filtration units called
(A)Nephrons (B)glomerulus (C)renal vein (D)none of the above
260.Which of the following is an example of anabolic process
(A)Digestion (B) Respiration (C) photosynthesis (D) Response to stimuli
261.Digestion is extracellular in
(A)Animals (B)Human (c)Amoeba (D) All the above
262.ln order for the blood to flow from right ventricle to left ventricle in mammalian
heart, it must flow through
(A). Right ventricle pulmonary arteries, lungs, pulmonary veins, left atrium
(B). Right ventricle, pulmonary veins, lungs, pulmonary arteries, left atrium
(C). Right ventricle, right atrium, lungs, pulmonary veins, left atrium.
(D). Right ventricle, systemic aorta, pulmonary veins, left atrium
263..The end product of fat digestion is
(A) Fatty acid (B)Glycerol (C) Aminoacids (D) Both A and B
49.Conversion of large fat droplets into smaller droplets are
(A0 Anabolism (B) Neutralisation (C) Assimilation (D) Emulsification
264..Alternate contraction and relaxation of the alimentary canal is called
(A) Peristalsis (B) Ingestion (C) Deglutition (D) None of these
265- In which group of the organisms the food material is broken down outside the body?
A) Mushroom, green plants, amoeba
B) Yeast, mushroom, bread mould
C) Paramecium, amoeba, cuscuta
D) Cuscuta, lice, tapeworm
266- Select the correct statement –
A) Heterotrophs make their food
B) Heterotrophs utilize solar energy to make food
C) Heterotrophs do not make their own food
D) Heterotrophs are capable of converting carbon dioxide and water into carbohydrates
267- Which of the following statements about autotrophs is incorrect?
A) They synthesize carbohydrates by using carbon dioxide, water in presence of sunlight and chlorophyll
B) They store carbohydrates in form of starch
C) They convert carbon dioxide and water into carbohydrates in the absence of sunlight
D) They form the first trophic level in the food chain
268- Which of these reactions occur in photosynthesis?
A) Carbon dioxide is reduced and water is oxidised (Carbon dioxide + water + energy from light produces glucose and oxygen)
B) water is reduced and carbon dioxide is oxidised
C) carbon dioxide and water are oxidised
D) carbon dioxide and water are reduced
269- A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates rice water has –
A) complex proteins
B) simple proteins
C) starch
D) Fats
270.The opening and closing of stomatal pore depends upon ___.
A) Oxygen
B) Guard Cells
C) concentration of carbon dioxide in stomata
D) temperature
271. In the human digestion system, the enzymes pepsin and trypsin are secreted by?
A) Pancreas and liver
B) pancreas and gall bladder
C) stomach and pancreas
D) stomach and salivary glands
272. Which of the statements is correct regarding bile?
A) secreted by duct and stored in liver
B) secreted by liver and stored in bile duct
C) Secreted by Liver and Stored in Gall Bladder
D) secreted by gall bladder and stored in liver
273.Which of the following components of food is digested by s. amylase?
A) proteins
B) fats
C) Minerals
D) carbohydrates
274Where are proteins first digested?
A) small intestine
B) stomach
C) large intestine
D) mouth
275. Which is the first enzyme that mixes with food?
) s.amylase
B) trypsin
C) erepsin
D) gastric juice
276.The cellular energy reserves in autotrophs are____.
A) glycogen
B) starch
C) protein
D) fatty acids
277. The autotrophs require ____.
A) CO2 and water
B) chlorophyll
C) sunlight
D) All
278.The breakdown of pyruvate into carbon dioxide, energy and water takes place in _____.
A) mitochondria
B) cytoplasm
C) Endoplasmic reticulum
D) ribosomes
279.When air is blown through lime water it turns milky because of ______.
A) water
B) carbon dioxide
C) limestone
D) calcium oxide
280.Write the correct sequence of air passage involved in inhalation?
A) larynx→ Nostrils → Pharynx → lungs
B) nostrils→ Pharynx→ larynx→ Trachea → alveoli
C) nasal passage → larynx → Trachea → Pharynx→ Alveoli
D) None
281.During respiration exchange of gases takes place in _____.
A) Trachea and larynx
B) alveoli of lungs
C) Alveoli and throat
D) Throat and larynx
282.What prevents back flow of blood during contraction?
A) Valves in heart
) Thick muscular walls of ventricles
C) Thin walls of atria
D) All
283.The correct path of urine is __.
A) Kidney→ ureter → urthra→ urinary bladder
B) Kidney → urinary bladder → urethra → ureter
C) kidney→ ureter → urinary bladder→ urethra
D) urinary bladder → kidney → ureter →urethra
284. During deficiency of oxygen in tissues of humans, pyruvic acid is converted into lactic acid in____.
A) Cytoplasm
B) chloroplast
C) mitochondria
D) golgi body
285. Xylem helps in ___.
A) transportation of water
B) translocation of food
C) both a and b
D) transportation of water and minerals
286.What is the approximate length of an alimentary canal?
A) 3m
B) 4m
C) 5m
D) 9m
287.Which organelle is called powerhouse of the cell?
A) Mitochondria
B) golgi body
C) ribosomes
D) none
288.Which respiration is much efficient?
A) aerobic
B) anaerobic
C) both are equal
D) none
289.Write full form of ATP.
A) adenosine diphosphate
B) adenosine phosphate
C) adenosine triphosphate
D) none
290. Which of the following statement(s) is (are) true about respiration?
A) During inhalation, ribs move inward and the diaphragm is raised
B) In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and carbon dioxide from blood into alveolar air sacs
C) Haemoglobin has greater affinity for carbon dioxide than oxygen Alveoli does not help in increasing surface are5a for exchange of gases
D) None
291- During respiration exchange of gases takes place in___.
A) Trachea and larynx
B) Alveoli of lungs
C) Alveoli and throat
D) Throat and larynx
292.Which of the following statement (s) is (are) true about heart?
A) Left atrium receives oxygenated blood from different parts of body while right atrium receives deoxygenated blood from lungs
B) Left ventricle pumps oxygenated blood to different body parts while right ventricle pumps deoxygenated blood to lungs
C) Left atrium transfers oxygenated blood to the right ventricle which sends it to different body parts
D)Right atrium receives oxygenated blood from different parts of the body while left ventricle pumps oxygenated blood to different parts of the body.
293.Single circulation i.e., blood flows through the heart only once during one cycle of passage through the body, is exhibited by____.
A) Labeo, Chameleon, Salamander
B) Hippocampus, Exocoetus, Anabas
C) Hyla, Rana, Draco
D) Whale, Dolphin, Turtle
294.Choose the correct statement that describes arteries:
• A) They have thick elastic walls, blood flows under high pressure; collect blood from different organs and bring it back to the heart
• B) They have thin walls with valves inside, blood flows under low pressure and carry blood away from the heart to various organs of the body
• C) They have thick elastic walls, blood flows under low pressure; carry blood from the heart to various organs of the body
• D) They have thick elastic walls without valves inside. The Blood flows under high pressure and carry blood away from the heart to different parts of the body
295.The filtration units of the kidney are called ___.
A) urethra
B) ureter
C) Neuron
D) nephron
296.Oxygen released during photosynthesis comes from_____.
A) water
B) Chlorophyll
C) carbon dioxide
D) glucose
297.The blood leaving the tissues becomes rich in _____.
A) Haemoglobin
B) carbon dioxide
C) water
D) oxygen
298.Which of the following is incorrect statement:
A) organism grow with time
B) Organisms must repair and maintain their structure
C) Movement of molecules does not take place among cells
D) Energy is essential for life processes
299. The internal (cellular) energy reservoir in autotrophs is:
A) glycogen
B) protein
C) starch
D) fatty acid
300. Choose the event that does not occur in photosynthesis?
A) Absorption of light energy by chlorophyll
B) Reduction of carbon dioxide to carbohydrates
C) Oxidation of carbon to carbon dioxide
D) Conversion of light energy to chemical energy
301. Choose the form in which most of the plants absorb nitrogen from the atmosphere ?
A) proteins
B) nitrates and nitrites
C) atmospheric nitrogen
D) amino acids
302. Which process converts light energy to chemical energy ?
A) Respiration
B) photosynthesis
C) transpiration
D) transportation of water and minerals
303.Which of these is the simplest form of food ?
A) rice
B) wheat
C) Butter
D) Glucose
304. Which out of them is raw material for photosynthesis ?
A) carbon dioxide
B) water
C) oxygen
D) both A and B
305.In which group of the organisms the food material is broken down outside the body?
A) Mushroom, green plants, amoeba
B) Yeast, mushroom, bread mould
C) Paramecium, amoeba, cuscuta
D) Cuscuta, lice, tapeworm
306. Select the correct statement –
A) Heterotrophs make their food
B) Heterotrophs utilize solar energy to make food
C) Heterotrophs do not make their own food
D) Heterotrophs are capable of converting carbon dioxide and water into carbohydrates
307.Which of the following statements about autotrophs is incorrect?
A) They synthesize carbohydrates by using carbon dioxide, water in presence of sunlight and chlorophyll
B) They store carbohydrates in form of starch
C) They convert carbon dioxide and water into carbohydrates in the absence of sunlight
D) They form the first trophic level in the food chain
308.Which of these reactions occur in photosynthesis?
A) Carbon dioxide is reduced and water is oxidised (Carbon dioxide + water + energy from light produces glucose and oxygen)
B) water is reduced and carbon dioxide is oxidised
C) carbon dioxide and water are oxidised
D) carbon dioxide and water are reduced
309. A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates rice water has –
A) complex proteins
B) simple proteins
C) starch
D) Fats
310..Which is the correct sequence –
A) mouth → stomach → small intestine → oesophagus → large intestine
B) mouth → oesophagus → stomach → large intestine → small intestine
C) mouth → stomach → oesophagus → small intestine → large intestine
D) mouth → oesophagus → stomach → small intestine → large intestine
311 If salivary amylase is lacking in saliva, which of the event in mouth will be affected-
A) Proteins breaking down into amino acids
B) starch breaking down into sugars
C) Fats breaking down into fatty acids and glycerol
D) Absorption of vitamins
312.The inner lining of the stomach is protected by one of the following from hydrochloric acid. Choose the correct one –
A) Mucus
B) Salivary amylase
C) Pepsin
D) Bile
313.Which part of the alimentary canal receives bile from the liver –
A) stomach
B) small intestine
C) large intestine
D) oesophagus
314.In which part of alimentary canal food is finally digested?
A) large intestine
b) Stomach
C) Mouth cavity
D) small intestine
315. Choose the function of pancreatic juice from the following :
A) Trypsin digests proteins and lipase digests carbohydrates
B) Trypsin digests emulsified fats and lipase digests proteins
C) Trypsin and lipase digest fats
D) Trypsin digests proteins and lipase digests emulsified fats
316.The correct sequence of anaerobic respiration –
A) Glucose → pyruvate → lactic acid
B) Glucose → Pyruvate → Ethanol + Carbon-Dioxide
C) glucose → pyruvate → ADP→ lactic acid
D) glucose -→ pyruvate → carbon dioxide + ethanol + energy
317. The pancreatic juice doesn’t contain the following enzymes-
A) Trypsin
B) Amylase
C) Lipase
D) Ptyalin
318. The pancreas pour their secretion into ___.
A) Small intestine
B) large intestine
C) stomach
D) Duodenum
319.The kidneys in human beings are part of ______.
A) Nutrition
B) Respiration
C) Excretion
D) Circulation
320.The opening and closing of stomatal pore depends upon ___.
A) Oxygen
B) Guard Cells
C) concentration of carbon dioxide in stomata
D) temperature
321. In the human digestion system, the enzymes pepsin and trypsin are secreted by?
A) Pancreas and liver
B) pancreas and gall bladder
C) stomach and pancreas
D) stomach and salivary glands
322.Which of the statements is correct regarding bile?
A) secreted by duct and stored in liver
B) secreted by liver and stored in bile duct
C) Secreted by Liver and Stored in Gall Bladder
D) secreted by gall bladder and stored in liver
323.Which of the following components of food is digested by s. amylase?
A) proteins
B) fats
C) Minerals
D) carbohydrates
324 Where are proteins first digested?
A) small intestine
B) stomach
C) large intestine
D) mouth
325.Which is the first enzyme that mixes with food?
A) s.amylase
B) trypsin
C) erepsin
D) gastric juice
326. The cellular energy reserves in autotrophs are____.
A) glycogen
B) starch
C) protein
D) fatty acids
327. The autotrophs require ____.
A) CO2 and water
B) chlorophyll
C) sunlight
D) All
328.The breakdown of pyruvate into carbon dioxide, energy and water takes place in _____.
A) mitochondria
B) cytoplasm
C) Endoplasmic reticulum
D) ribosomes
329- When air is blown through lime water it turns milky because of ______.
A) water
B) carbon dioxide
C) limestone
D) calcium oxide
330.Write the correct sequence of air passage involved in inhalation?
A) larynx→ Nostrils → Pharynx → lungs
B) nostrils→ Pharynx→ larynx→ Trachea → alveoli
C) nasal passage → larynx → Trachea → Pharynx→ Alveoli
D) None
331.During respiration exchange of gases takes place in _____.
A) Trachea and larynx
B) alveoli of lungs
C) Alveoli and throat
D) Throat and larynx
322.What prevents back flow of blood during contraction?
A) Valves in heart
B) Thick muscular walls of ventricles
C) Thin walls of atria
D) All
323.The correct path of urine is __.
A) Kidney→ ureter → urthra→ urinary bladder
B) Kidney → urinary bladder → urethra → ureter
C) kidney→ ureter → urinary bladder→ urethra
D) urinary bladder → kidney → ureter →urethra
324.During deficiency of oxygen in tissues of humans, pyruvic acid is converted into lactic acid in____.
A) Cytoplasm
B) chloroplast
C) mitochondria
D) golgi body
325.Xylem helps in ___.
A) transportation of water
B) translocation of food
C) both a and b
D) transportation of water and minerals
326.What is the approximate length of an alimentary canal?
A) 3m
B) 4m
C) 5m
D) 9m
327.Which organelle is called powerhouse of the cell?
A) Mitochondria
B) golgi body
C) ribosomes
D) none
328.Which respiration is much efficient?
A) aerobic
B) anaerobic
C) both are equal
D) none
329.Write full form of ATP.
A) adenosine diphosphate
B) adenosine phosphate
C) adenosine triphosphate
D) none
330.The autotrophic mode of nutrition requires:
(a) carbon dioxide and water
(b) chlorophyll
(c) sunlight
(d) all of the above
331.The largest gland in human body is:
(a) liver
(b) gastric glands
(c) pancreas
(d) salivary glands.
332.Number of salivary glands found in man are:
(a) one pair
(b) two pairs
(c) three pairs
(d) five pairs
333.Pancreatic juice helps in the digestion of:
(a) proteins
(b) proteins and fats
(c) proteins and carbohydrates
(d) proteins, carbohydrates and fats
334.ATP and NADP 2H are produced in:
(a) Mitochondria
(b) Chloroplast
(c) Peroxisomes
(d) Lysosomes
335.Oxygen evolved during photosynthesis comes from:
(a) water
(b) CO2
(c) soil
(d) atmosphere.
.336.Rate of photosynthesis is high in:
(a) orange light
(b) green light
(c) red light
(d) yellow light
Answer:
(c) red light
336.The ultimate source of all metabolic energy on our earth is:
(a) green plants
(b) the sun
(c) O2
(d) O2 and H2O.
337.Light reaction takes place in:
(a) grana
(b) stroma
(c) mitochondria
(d) leucoplast.
Answer:
(a) grana
338.Plants purify air by:
(a) transpiration
(b) photosynthesis
(c) respiration
(d) absorption of water
339.In which process CO2 is given out:
(a) photosynthesis
(b) respiration
(c) transpiration
(d) translocation.
340.Excess glucose is stored in our body in the form of:
(a) glycogen
(b) fat
(c) protein
(d) cholesterol.
341.Trypsin enzyme is found in:
(a) gastric juice
(b) bile juice
(c) pancreatic juice
(d) intestinal juice
342.Which is the correct sequence of the air passage in man:
(a) Nasal cavity → Pharynx → Larynx → Trachea → Bronchi → Alveoli
(b) Nasal cavity → Larynx → Pharynx → Trachea → Bronchi → Alveoli
(c) Nasal cavity → Pharynx → Trachea → Larynx → Bronchi → Alveoli
(d) Nasal cavity → Trachea → Larynx → Bronchi → Alveol
343.Number of lobes in right and left lungs of man are:
(a) 3 and 2
(b) 2 and 3
(c) 4 and 2
(d) 2 and 4
344.In lungs CO2 rich blood comes from:
(a) different parts of the body
(b) left ventricle
(c) right ventricle
(d) liver
345.Blood vessel which carries oxygenated blood from lungs is:
(a) pulmonary vein
(b) pulmonary artery
(c) coronary artery
(d) superior venacava
346.Rate of respiration in man is:
(a) about 28 times per minute
(b) 12 to 15 times per minute
(c) 25 times per minute
(d) 72 times per minute
Answer:
(b) 12 to 15 times per minute
347.Number of alveoli in lungs is:
(a) 30 thousand
(b) 30 lac
(c) 3 crore
(d) 30 crore
Answer:
(d) 30 crore
348.Lungs are enclosed in:
(a) perichondrium
(b) peritoneum
(c) pleural membrane
(d) pericardium.
349.Lymph does not contain:
(a) water
(b) white blood corpuscles
(c) proteins
(d) red blood corpuscles
350.Which blod corpuscles destroy bacteria?
(a) W.B.C
(b) R.B.C
(c) blood platelets
(d) all these
351.Main function of haemoglobin is:
(a) reproduction
(b) to kill harmful bacteria
(c) transport of O2
(d) to make blood colourless
352.Arteries have:
(a) thick wall without valves
(b) thick wall with valves
(c) thin wall with valves
(d) thin wall without valves
353.During respiration energy is stored in the form of:
(a) ADP
(b) ATP
(c) NADP
(d) inorganic phosphate.
.
354.Glycolysis takes place in:
(a) cytoplasm
(b) chloroplast
(c) mitochondria
(d) ribosome.
355.Which of the following substance is formed during anaerobic respiration?
(a) ethyl alcohol
(b) glycerol
(c) glucose
(d) ethylene
356.In plants respiration takes place:
(a) during day time only
(b) during night time only
(c) during evening time only
(d) during day and night
357.During respiration in human body:
(a) new cells are formed
(b) glucose is oxidized
(c) proteins are formed
(d) glucose is formed
358.During aerobic respiration one molecule of glucose produces:
(a) 32 ATP
(b) 19 ATP
(c) 38 ATP
(d) 30 ATP
359.Translocation of food takes place by:
(a) xylem
(b) phloem
(c) parenchyma
(d) cambium
360.Pulmonary vein brings blood into:
(a) right auricle
(b) left auricle
(c) left ventricle
(d) right ventricle
361.Which part of the alimentary canal of man does not secretes enzyme?
(a) mouth
(b) oesophagus
(c) stomach
(d) intestine
362.Amoeba ingests food with the help of:
(a) cilia
(b) mouth
(c) flagella
(d) pseudopodia
363.Impure blood from right ventricle goes into the:
(a) lungs
(b) heart
(c) skin
(d) liver
364 The air is purified in the following process by plants:
(a) transpiration
(b) photosynthesis
(c) respiration
(d) reproduction.
365.Food is translocated by phloem in the form of:
(a) sucrose
(b) protein
(c) hormone
(d) fats
366.Blood pressure is measured by:
(a) thermometer
(b) barometer
(c) galvanometer
(d) sphygmomanometer
367.Urea is produced from ammonia in the body of a man in:
(a) liver
(b) kidney
(c) spleen
(d) intestine
Liver
368.Malpighian body consists of:
(a) uriniferous tubule
(b) Bowman’s caspsule and glomerulus
(c) Bowman’s capsule and neck
(d) two limbs of loop of Henle
369.Pulmonary vein opens at:
(a) right auricle
(b) left auricle
(c) left ventricle
(d) right ventricle
370.Leaf like cartilaginous structure hanging in oesophagus is called:
(a) epipharynx
(b) epiglottis
(c) alveoli
(d) mucilage sheath.
371 Un-oxidised blood is circulated through pulmonary arteries into:
(a) heart
(b) lungs
(c) anterior and posterior aorta
(d) right auricle.
372.Liver secretes:
(a) saliva
(b) gastric juice
(c) bile
(d) pancreatic juice
373.Enzyme amylase acts upon:
(a) fats
(b) proteins
(c) carbohydrates
(d) salts
374.Muscle contraction of alimentary canal is called:
(a) digestion
(b) peristalsis
(c) circulation
(d) absorption
375.Pure blood is taken to various part of body by:
(a) veins
(b) vena cava
(c) right ventricle
(d) aorta
376.C shaped structure of alimentary canal is:
(a) stomach
(b) duodenum
(c) oesophagus
(d) vermiform appendi
377.The kidneys in human beings are a part of the system for:
(a) nutrition
(b) respiration
(c) excretion
(d) transportation
378.The xylem in plants are responsible for:
(a) transport of water
(b) transport of food
(c) transport of amino acids
(d) transport of oxygen.
379.The number of milk teeth present in humans are:
(a) 20
(b) 24
(c) 28
(d) 32
380.The length of oesophagus in humans is:
(a) 5.8 cm
(b) 25.30 cm
(c) 1.5 metres
(d) 15 feet
Answer:
(b) 25.30 cm
381.Gastric juice is secreted from:
(a) pancreas
(b) gall bladder
(c) stomach
(d) liver
382.What does a liver secrete?
(a) Saliva
(b) Gastric juice
(c) Bile juice
(d) Pancreatic juice
383.The energy currency is:
(a) DNA
(b) RNA
(c) ATP
(d) Chlorophyll
384.The product of alcholic fermentation is:
(a) ethyl alcohol
(b) methyl alcohol
(c) butanol
(d) All of these
385.Dixon and Jolly are associated with:
(a) ascent of sap
(b) osmosis
(c) absorption
(d) diffusion
386.Soluble only in water is:
(a) Vitamin A
(b) Vitamin D
(c) Vitamin K
(d) Vitamin C
Answer.d
Read the following and answer any four questions from (i) to (v).
All living cells need nutrients, O, and other essential substances. Also, the waste and harmful substances need to be removed continuously for healthy functioning of cells. So, a well developed transport system is mandatory for living organisms. Complex organisms have special fluids within their bodies to transport such materials. Blood is the most commonly used body fluid by most of the higher organisms. Lymph also helps in the transport of certain substances.
(387) Which of the following does not exhibit phagocytic activity?
(a) Monocytes
(b) Neutrophils
(c) Basophil
(d) Macrophage
(388) Amount of blood corpusles in changed in dengue fever. One of the common symptoms observed in people infected with dengue fever is
(a) significant decrease in RBC count
(b) significant decrease in WBC count
(c) significant decrease in platelets count
(d) significant increase in platelets count
(389) Why are WBCs called soldiers of the body?
(a) They are capable of squeezing out of blood capillaries.
(b) They are manufactured in bone marrow.
(c) They fight against disease causing germs.
(d) They have granular cytoplasm with lobed nucleus
(390) Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body.
(a) Erythrocytes
(b) Neutrophils
(c) Leucocytes
(d) Thrombocytes
(391) Which of the following is the correct feature of lymph?
(a) It is similar to the plasma of blood, but is colourless and contains less proteins.
(b) It is similar to the WBCs of blood, but is colourless and contain more proteins.
(c) It is similar to the RBCs of blood and red in colour.
(d) It contains more fats.
Question 2:
Read the following and answer any four questions from (i) to (v).
Heterotrophic nutrition is a mode of nutrition in which organisms obtain readymade organic food from outside sources. The organisms that depend upon outside sources for obtaining organic nutrients are called heterotrophs.
Heterotrophic nutrition is of three types: saprophytic, parasitic and holozoic nutrition.
(392) Which of the following is a parasite?
(a) Yeast
(b) Taenia
(c) Amoeba
(d) Earthworm
(393) Which of the following is an example of saprotroph?
(a) Grass
(b) Mushroom
(c) Amoeba
(d) Paramecium
(394) Heterotrophic nutrition involves
(a) production of simple sugar from inorganic compounds
(b) utilisation of chemical energy to prepare food
(c) utilisation of energy obtained by plants
(d) all of these.
(395) In Paramecium, food enters the body through
(a) mouth
(b) pseudopodia
(c) cilia
(d) cytostome
396. Assertion (A) : Plants lack excretory organs.
Reason (R) : Plants usually absorb essential nutrients.
397.Assertion (A) : In anaerobic respiration, one of the end product is alcohol.
Reason (R) : There is an incomplete breakdown of glucose.
398.Assertion (A) : In plants there is no need of specialised respiratory organs.
Reason (R) : Plants do not have great demands of gaseous exchange.
399.Assertion (A) : Bile is essential for digestion of lipids.
Reason (R) : Bile juice contains enzymes.
400.. Assertion (A) : Carbohydrate digestion mainly takes place in small intestine.
Reason (R) : Pancreatic juice contains the enzyme lactase
401.Assertion (A) : Aerobic respiration requires less energy as compared to anaerobic respiration.
Reason (R) : Mitochondria is the powerhouse of the cell.
402.Assertion (A): Arteries are thick-walled and elastic in nature.
Reason (R) : Arteries have to transport blood away from the heart.
403.Assertion (A) : Human heart is four-chambered.
Reason (R) : Vena cava is the only artery that supplies deoxygenated blood to the heart.
404. Assertion (A): Energy is required to carry out different life processes.
Reason (R) : Energy is obtained in the form of ATP in the mitochondria.
405.Assertion (A): Rings of cartilage are present in the throat,
Reason (R) : These ensure that the air-passage does not collapse
406.Assertion (A): Pyruvate is a six-carbon molecule
Reason (R) : It is prepared in the cytoplasm as the first step to cellular respiration
407.Assertion (A): Molecular movements are needed for life.
Reason (R): Body structures made up of these molecules need continuous repair and maintenance
408.Assertion (A): Diffusion does not meet high energy requirements of multi-cellular organisms
Reason (R) : Diffusion is a fast process but occurs at the surface of the body.
409.Assertion (A): The opening and closing of the pore is a function of the guard cells.
Reason (R) : Stomatal pores are the site for exchange of gases by diffusion.
410.Assertion (A): The purpose of making urine is to filter out undigested food from intestine
Reason (R): Kidneys filter the waste and produce urine,
411.Assertion (A): The inner lining of the small intestine has numerous finger-like projections called villi.
Reason (R) : The villi increase the surface area for absorption.
412.Assertion (A): In human beings, the respiratory pigment is haemoglobin
Reason (R) : It is a type of protein which has high-affinity carbon dioxide.
413.Assertion : The plants store some of the waste products in their body parts.
Reason: Raphides are the solid waste products of plants
414.Assertion : The movement of water and dissolved salts in xylem is always upwards.
Reason: ‘The upward movement of water is due to low pressure created by transpiration.
415.Assertion : Photosynthesis takes place in green parts of the plants.
Reason: Photosynthesis always takes place in leaves
416.Assertion: The average number of heart beat of a person at rest is about 80 per minute.
Reason: One contraction and relaxation of the heart constitutes a complete heart beat.
417.Assertion : Ureters are the tubes which carry urine from kidneys to the bladder.
Reason: Urine is stored in the urethra.
418.Assertion : Ventricles have thicker walls than auricles.
Reason: Ventricles have to pump blood into various organs with great pressure
419.Assertion : Capillaries are the thinnest blood vessels.
Reason: Capillaries connect the branches of arteries and veins.
418.Assertion : Blood takes up oxygen from the alveolar air and release CO2 during exchange.
Reason: ‘The concentration of O, is more in alveolar air.
419.. Assertion: The large intestine is the largest part of the alimentary canal.
Reason: Tiger has a shorter small intestine, than herbivores.
420 Assertion : Most of the living organisms carry out aerobic respiration.
Reason: Mitochondria is the site of aerobic respiration in the cell.
421.Assertion : The Bowman’s capsule and the tubule together make a nephron.
Reason : The function of tubule is to allow the selective reabsorption of substances like glucose, amino
acids, urea, salts and water into the blood capillaries.
422.Assertion : Pancreatic juice digests starch, proteins and fats.
Reason: Pancreatic juice contains digestive enzymes like pancreatic amylase, trypsin and lipase.
423.Assertion: The accumulation of lactic acid in the muscles causes muscle cramps.
Reason: During vigorous physical exercise leg muscles respire anaerobically.
424.Assertion : Phloem helps in translocation of food from the leaves.
Reason: Phloem provides mechanical support to plant
425.Assertion : Trachea does not collapse, when there is no air in it.
Reason : Trachea is supported by cartilage.
426.Assertion: Lungs always contain a residual volume of air.
Reason: It is so to ensure enough time for the release of CO2 and for the absorption of O2 .
427.Assertion: In a healthy adult, the initial filtrate in the kidneys is about 180 L daily, but the actual volume excreted is only a litre a day.
Reason: Most of the filtrate is lost from the body in the form of sweat.
428.Assertion: Respiration is opposite of Photosynthesis
Reason: In Photosynthesis food is made from energy and in Respiration food is converted to energy.
429. Assertion: The four chambered heart does not mix oxygenated and deoxygenated blood.
Reason: Four chambered heart is found in mammals with advanced body functions.
430 Assertion: Translocation of food occurs in Plants.
Reason: Xylem tissue is responsible for Translocation.
431.Select the incorrect pair.
(a) Respiration- – Oxidation of food to obtain energy
(b) Nutrition – Obtaining and utilising nutrients
(c) Transportation- Response to stimuli
(d) Excretion – Removed of waste by-products
432 Which one of the following juices secreted in the human body does not contain any enzyme?
(a) Salivary juice
(b) Bile juice
(c) Gastric juice
(d) Pancreatic juice
433.Rings of cartilage present in the throat ensure that
(a) the air passage collapses
(b) the air passage does not collapse
(c) the air is filtered entering the nostrils
(d) None of the above
434.The function of the lymph fluid is to
(a) drains excess fluid from extracellular space back into the blood
(b) carries digested and absorbed fat from intestine
(c) circulates around the body and help in clotting of blood
(d) Both (a) and (b)
435.Amoeba shows following kind of nutrition
saprotrophic
holozoic
parasitic
autotrophic
436.Which is the correct sequence of body parts in the human alimentary canal?
Mouth → stomach → small intestine → large intestine → oesophagus
Mouth → oesophagus → stomach → small intestine → large intestine
Mouth → oesophagus → stomach → large intestine → small intestine
Mouth → stomach → oesophagus → smallintestine → large intestine
437One cell-thick vessels are called
Veins
Capillaries
Pulmonary artery
Arteries
4.38. Which process converts light energy to chemical energy ?
Respiration
transportation of water and minerals
photosynthesis
transpiration
439 . The extracellular fluid released from the capillaries is:
lymph
serum
mucus
plasma
440.
Which is the first enzyme to mix with food i the digestive tract?
Pepsin
Trypsin
Cellulose
Amylase
441.The small pores present of leaf’s surface are called
None of these
Guard cells
Stomata
Chlorophyll
442.The procedure used for cleaning the blood of a person by separating urea from it is called:
dialysis
double circulation
filtration
osmosis
443.The breakdown of pyruvate to give carbon di-oxide, water and energy takes place in
mitochondria
chloroplast
nucleus
cytoplasm
444.Which of the following events in the mouth cavity will be affected if salivary amylase is lacking in the saliva?
Starch breaking down into sugars
Proteins breaking down into amino acids
Fats breaking down into fatty acids and glycerol
Absorption of vitamins
445.Which of these juices is secreted by pancreas?
both Trypsin and Pepsin
Pepsin
Bile juice
Trypsin
446.Which element is used in the synthesis of proteins?
Carbon dioxide
Hydrogen
Nitrogen
Oxygen
447. In which mode of nutrition an organism derives its food from the body of another living organism without killing it?
Autotrophic nutrition
Parasitic nutrition
Saprotrophic nutrition
Holozoic nutrition
448.ASSERTION: The opening and closing of the pore is a function of the guard cells.
REASON: Stomatal pores are the site for exchange of gases by diffusion.
449. Temporary finger like extensions on amoeba are called
Pseudopodia
Cell membrane
Cell wall
Cilia
450.. Lipase acts on
Fats
All of these
Amino acids
Carbohydrates
451.ASSERTION: Arteries are thick-walled and elastic in nature.
REASON: Arteries have to transport blood away from the heart.
(A)One (B)two (C)three (D)four
249. The normal systolic pressure is about ____mm of Hg and diastolic pressure is
____ mm of Hg.
(A)100,60 (B)120,80 (C)140,100 (D)160,120
250. Blood pressure is measured with an instrument called
(A)Manometer (B)sphygmomanometer (C)hydrometer (D)anemometer
251. ____ are the vessels which carryblood away from the heart to various organs of
the body
(A)Veins (B)spines (C)arteries (D)none of the above
252.Following is true for tissue fluid or lymph
(A)It is similar to the plasma of blood
(B)It is colorless
(C)It contains less protein
(D)All of the above
253.Following is true for plants
(A)Plants have low energy needs
(B)The xylem moves water and minerals obtained from the soil
(C)Phloem transports products of photosynthesis from the leaves to other parts of
the plant
(D)All of the above
254.. The loss of water in the form of vapour from the aerial parts of the plant is
known as
(A)Transpiration (B)respiration (C)transportation (D)none of the above
255. The transport of soluble products of photosynthesis is called
(A)Transpiration (B)respiration (C)transportation (D)translocation
256.The excretory system of human beings includes
(A)A pair of kidneys
(B)A pair of ureters
(C)A urinary bladder and a urethra
(D)All of the above
257. Following is true
(A)CO2 is removed from the blood in the lungs
(B)Nitrogenous waste such as urea or uric acid are removed from blood in the
kidneys
(C)The purpose of making urine is to filter out waste products from the blood
(D)All of the above
258.The kidney is associated with the cup-shaped end of a coiled tube called
(A)Glomerulus (B)Bowman’s capsule (C)collecting duct (D)none of the above
259.Each kidney has large numbers of filtration units called
(A)Nephrons (B)glomerulus (C)renal vein (D)none of the above
260.Which of the following is an example of anabolic process
(A)Digestion (B) Respiration (C) photosynthesis (D) Response to stimuli
261.Digestion is extracellular in
(A)Animals (B)Human (c)Amoeba (D) All the above
262.ln order for the blood to flow from right ventricle to left ventricle in mammalian
heart, it must flow through
(A). Right ventricle pulmonary arteries, lungs, pulmonary veins, left atrium
(B). Right ventricle, pulmonary veins, lungs, pulmonary arteries, left atrium
(C). Right ventricle, right atrium, lungs, pulmonary veins, left atrium.
(D). Right ventricle, systemic aorta, pulmonary veins, left atrium
263..The end product of fat digestion is
(A) Fatty acid (B)Glycerol (C) Aminoacids (D) Both A and B
49.Conversion of large fat droplets into smaller droplets are
(A0 Anabolism (B) Neutralisation (C) Assimilation (D) Emulsification
264..Alternate contraction and relaxation of the alimentary canal is called
(A) Peristalsis (B) Ingestion (C) Deglutition (D) None of these
265- In which group of the organisms the food material is broken down outside the body?
A) Mushroom, green plants, amoeba
B) Yeast, mushroom, bread mould
C) Paramecium, amoeba, cuscuta
D) Cuscuta, lice, tapeworm
266- Select the correct statement –
A) Heterotrophs make their food
B) Heterotrophs utilize solar energy to make food
C) Heterotrophs do not make their own food
D) Heterotrophs are capable of converting carbon dioxide and water into carbohydrates
267- Which of the following statements about autotrophs is incorrect?
A) They synthesize carbohydrates by using carbon dioxide, water in presence of sunlight and chlorophyll
B) They store carbohydrates in form of starch
C) They convert carbon dioxide and water into carbohydrates in the absence of sunlight
D) They form the first trophic level in the food chain
268- Which of these reactions occur in photosynthesis?
A) Carbon dioxide is reduced and water is oxidised (Carbon dioxide + water + energy from light produces glucose and oxygen)
B) water is reduced and carbon dioxide is oxidised
C) carbon dioxide and water are oxidised
D) carbon dioxide and water are reduced
269- A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates rice water has –
A) complex proteins
B) simple proteins
C) starch
D) Fats
270.The opening and closing of stomatal pore depends upon ___.
A) Oxygen
B) Guard Cells
C) concentration of carbon dioxide in stomata
D) temperature
271. In the human digestion system, the enzymes pepsin and trypsin are secreted by?
A) Pancreas and liver
B) pancreas and gall bladder
C) stomach and pancreas
D) stomach and salivary glands
272. Which of the statements is correct regarding bile?
A) secreted by duct and stored in liver
B) secreted by liver and stored in bile duct
C) Secreted by Liver and Stored in Gall Bladder
D) secreted by gall bladder and stored in liver
273.Which of the following components of food is digested by s. amylase?
A) proteins
B) fats
C) Minerals
D) carbohydrates
274Where are proteins first digested?
A) small intestine
B) stomach
C) large intestine
D) mouth
275. Which is the first enzyme that mixes with food?
) s.amylase
B) trypsin
C) erepsin
D) gastric juice
276.The cellular energy reserves in autotrophs are____.
A) glycogen
B) starch
C) protein
D) fatty acids
277. The autotrophs require ____.
A) CO2 and water
B) chlorophyll
C) sunlight
D) All
278.The breakdown of pyruvate into carbon dioxide, energy and water takes place in _____.
A) mitochondria
B) cytoplasm
C) Endoplasmic reticulum
D) ribosomes
279.When air is blown through lime water it turns milky because of ______.
A) water
B) carbon dioxide
C) limestone
D) calcium oxide
280.Write the correct sequence of air passage involved in inhalation?
A) larynx→ Nostrils → Pharynx → lungs
B) nostrils→ Pharynx→ larynx→ Trachea → alveoli
C) nasal passage → larynx → Trachea → Pharynx→ Alveoli
D) None
281.During respiration exchange of gases takes place in _____.
A) Trachea and larynx
B) alveoli of lungs
C) Alveoli and throat
D) Throat and larynx
282.What prevents back flow of blood during contraction?
A) Valves in heart
) Thick muscular walls of ventricles
C) Thin walls of atria
D) All
283.The correct path of urine is __.
A) Kidney→ ureter → urthra→ urinary bladder
B) Kidney → urinary bladder → urethra → ureter
C) kidney→ ureter → urinary bladder→ urethra
D) urinary bladder → kidney → ureter →urethra
284. During deficiency of oxygen in tissues of humans, pyruvic acid is converted into lactic acid in____.
A) Cytoplasm
B) chloroplast
C) mitochondria
D) golgi body
285. Xylem helps in ___.
A) transportation of water
B) translocation of food
C) both a and b
D) transportation of water and minerals
286.What is the approximate length of an alimentary canal?
A) 3m
B) 4m
C) 5m
D) 9m
287.Which organelle is called powerhouse of the cell?
A) Mitochondria
B) golgi body
C) ribosomes
D) none
288.Which respiration is much efficient?
A) aerobic
B) anaerobic
C) both are equal
D) none
289.Write full form of ATP.
A) adenosine diphosphate
B) adenosine phosphate
C) adenosine triphosphate
D) none
290. Which of the following statement(s) is (are) true about respiration?
A) During inhalation, ribs move inward and the diaphragm is raised
B) In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and carbon dioxide from blood into alveolar air sacs
C) Haemoglobin has greater affinity for carbon dioxide than oxygen Alveoli does not help in increasing surface are5a for exchange of gases
D) None
291- During respiration exchange of gases takes place in___.
A) Trachea and larynx
B) Alveoli of lungs
C) Alveoli and throat
D) Throat and larynx
292.Which of the following statement (s) is (are) true about heart?
A) Left atrium receives oxygenated blood from different parts of body while right atrium receives deoxygenated blood from lungs
B) Left ventricle pumps oxygenated blood to different body parts while right ventricle pumps deoxygenated blood to lungs
C) Left atrium transfers oxygenated blood to the right ventricle which sends it to different body parts
D)Right atrium receives oxygenated blood from different parts of the body while left ventricle pumps oxygenated blood to different parts of the body.
293.Single circulation i.e., blood flows through the heart only once during one cycle of passage through the body, is exhibited by____.
A) Labeo, Chameleon, Salamander
B) Hippocampus, Exocoetus, Anabas
C) Hyla, Rana, Draco
D) Whale, Dolphin, Turtle
294.Choose the correct statement that describes arteries:
• A) They have thick elastic walls, blood flows under high pressure; collect blood from different organs and bring it back to the heart
• B) They have thin walls with valves inside, blood flows under low pressure and carry blood away from the heart to various organs of the body
• C) They have thick elastic walls, blood flows under low pressure; carry blood from the heart to various organs of the body
• D) They have thick elastic walls without valves inside. The Blood flows under high pressure and carry blood away from the heart to different parts of the body
295.The filtration units of the kidney are called ___.
A) urethra
B) ureter
C) Neuron
D) nephron
296.Oxygen released during photosynthesis comes from_____.
A) water
B) Chlorophyll
C) carbon dioxide
D) glucose
297.The blood leaving the tissues becomes rich in _____.
A) Haemoglobin
B) carbon dioxide
C) water
D) oxygen
298.Which of the following is incorrect statement:
A) organism grow with time
B) Organisms must repair and maintain their structure
C) Movement of molecules does not take place among cells
D) Energy is essential for life processes
299. The internal (cellular) energy reservoir in autotrophs is:
A) glycogen
B) protein
C) starch
D) fatty acid
300. Choose the event that does not occur in photosynthesis?
A) Absorption of light energy by chlorophyll
B) Reduction of carbon dioxide to carbohydrates
C) Oxidation of carbon to carbon dioxide
D) Conversion of light energy to chemical energy
301. Choose the form in which most of the plants absorb nitrogen from the atmosphere ?
A) proteins
B) nitrates and nitrites
C) atmospheric nitrogen
D) amino acids
302. Which process converts light energy to chemical energy ?
A) Respiration
B) photosynthesis
C) transpiration
D) transportation of water and minerals
303.Which of these is the simplest form of food ?
A) rice
B) wheat
C) Butter
D) Glucose
304. Which out of them is raw material for photosynthesis ?
A) carbon dioxide
B) water
C) oxygen
D) both A and B
305.In which group of the organisms the food material is broken down outside the body?
A) Mushroom, green plants, amoeba
B) Yeast, mushroom, bread mould
C) Paramecium, amoeba, cuscuta
D) Cuscuta, lice, tapeworm
306. Select the correct statement –
A) Heterotrophs make their food
B) Heterotrophs utilize solar energy to make food
C) Heterotrophs do not make their own food
D) Heterotrophs are capable of converting carbon dioxide and water into carbohydrates
307.Which of the following statements about autotrophs is incorrect?
A) They synthesize carbohydrates by using carbon dioxide, water in presence of sunlight and chlorophyll
B) They store carbohydrates in form of starch
C) They convert carbon dioxide and water into carbohydrates in the absence of sunlight
D) They form the first trophic level in the food chain
308.Which of these reactions occur in photosynthesis?
A) Carbon dioxide is reduced and water is oxidised (Carbon dioxide + water + energy from light produces glucose and oxygen)
B) water is reduced and carbon dioxide is oxidised
C) carbon dioxide and water are oxidised
D) carbon dioxide and water are reduced
309. A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates rice water has –
A) complex proteins
B) simple proteins
C) starch
D) Fats
310..Which is the correct sequence –
A) mouth → stomach → small intestine → oesophagus → large intestine
B) mouth → oesophagus → stomach → large intestine → small intestine
C) mouth → stomach → oesophagus → small intestine → large intestine
D) mouth → oesophagus → stomach → small intestine → large intestine
311 If salivary amylase is lacking in saliva, which of the event in mouth will be affected-
A) Proteins breaking down into amino acids
B) starch breaking down into sugars
C) Fats breaking down into fatty acids and glycerol
D) Absorption of vitamins
312.The inner lining of the stomach is protected by one of the following from hydrochloric acid. Choose the correct one –
A) Mucus
B) Salivary amylase
C) Pepsin
D) Bile
313.Which part of the alimentary canal receives bile from the liver –
A) stomach
B) small intestine
C) large intestine
D) oesophagus
314.In which part of alimentary canal food is finally digested?
A) large intestine
b) Stomach
C) Mouth cavity
D) small intestine
315. Choose the function of pancreatic juice from the following :
A) Trypsin digests proteins and lipase digests carbohydrates
B) Trypsin digests emulsified fats and lipase digests proteins
C) Trypsin and lipase digest fats
D) Trypsin digests proteins and lipase digests emulsified fats
316.The correct sequence of anaerobic respiration –
A) Glucose → pyruvate → lactic acid
B) Glucose → Pyruvate → Ethanol + Carbon-Dioxide
C) glucose → pyruvate → ADP→ lactic acid
D) glucose -→ pyruvate → carbon dioxide + ethanol + energy
317. The pancreatic juice doesn’t contain the following enzymes-
A) Trypsin
B) Amylase
C) Lipase
D) Ptyalin
318. The pancreas pour their secretion into ___.
A) Small intestine
B) large intestine
C) stomach
D) Duodenum
319.The kidneys in human beings are part of ______.
A) Nutrition
B) Respiration
C) Excretion
D) Circulation
320.The opening and closing of stomatal pore depends upon ___.
A) Oxygen
B) Guard Cells
C) concentration of carbon dioxide in stomata
D) temperature
321. In the human digestion system, the enzymes pepsin and trypsin are secreted by?
A) Pancreas and liver
B) pancreas and gall bladder
C) stomach and pancreas
D) stomach and salivary glands
322.Which of the statements is correct regarding bile?
A) secreted by duct and stored in liver
B) secreted by liver and stored in bile duct
C) Secreted by Liver and Stored in Gall Bladder
D) secreted by gall bladder and stored in liver
323.Which of the following components of food is digested by s. amylase?
A) proteins
B) fats
C) Minerals
D) carbohydrates
324 Where are proteins first digested?
A) small intestine
B) stomach
C) large intestine
D) mouth
325.Which is the first enzyme that mixes with food?
A) s.amylase
B) trypsin
C) erepsin
D) gastric juice
326. The cellular energy reserves in autotrophs are____.
A) glycogen
B) starch
C) protein
D) fatty acids
327. The autotrophs require ____.
A) CO2 and water
B) chlorophyll
C) sunlight
D) All
328.The breakdown of pyruvate into carbon dioxide, energy and water takes place in _____.
A) mitochondria
B) cytoplasm
C) Endoplasmic reticulum
D) ribosomes
329- When air is blown through lime water it turns milky because of ______.
A) water
B) carbon dioxide
C) limestone
D) calcium oxide
330.Write the correct sequence of air passage involved in inhalation?
A) larynx→ Nostrils → Pharynx → lungs
B) nostrils→ Pharynx→ larynx→ Trachea → alveoli
C) nasal passage → larynx → Trachea → Pharynx→ Alveoli
D) None
331.During respiration exchange of gases takes place in _____.
A) Trachea and larynx
B) alveoli of lungs
C) Alveoli and throat
D) Throat and larynx
322.What prevents back flow of blood during contraction?
A) Valves in heart
B) Thick muscular walls of ventricles
C) Thin walls of atria
D) All
323.The correct path of urine is __.
A) Kidney→ ureter → urthra→ urinary bladder
B) Kidney → urinary bladder → urethra → ureter
C) kidney→ ureter → urinary bladder→ urethra
D) urinary bladder → kidney → ureter →urethra
324.During deficiency of oxygen in tissues of humans, pyruvic acid is converted into lactic acid in____.
A) Cytoplasm
B) chloroplast
C) mitochondria
D) golgi body
325.Xylem helps in ___.
A) transportation of water
B) translocation of food
C) both a and b
D) transportation of water and minerals
326.What is the approximate length of an alimentary canal?
A) 3m
B) 4m
C) 5m
D) 9m
327.Which organelle is called powerhouse of the cell?
A) Mitochondria
B) golgi body
C) ribosomes
D) none
328.Which respiration is much efficient?
A) aerobic
B) anaerobic
C) both are equal
D) none
329.Write full form of ATP.
A) adenosine diphosphate
B) adenosine phosphate
C) adenosine triphosphate
D) none
330.The autotrophic mode of nutrition requires:
(a) carbon dioxide and water
(b) chlorophyll
(c) sunlight
(d) all of the above
331.The largest gland in human body is:
(a) liver
(b) gastric glands
(c) pancreas
(d) salivary glands.
332.Number of salivary glands found in man are:
(a) one pair
(b) two pairs
(c) three pairs
(d) five pairs
333.Pancreatic juice helps in the digestion of:
(a) proteins
(b) proteins and fats
(c) proteins and carbohydrates
(d) proteins, carbohydrates and fats
334.ATP and NADP 2H are produced in:
(a) Mitochondria
(b) Chloroplast
(c) Peroxisomes
(d) Lysosomes
335.Oxygen evolved during photosynthesis comes from:
(a) water
(b) CO2
(c) soil
(d) atmosphere.
.336.Rate of photosynthesis is high in:
(a) orange light
(b) green light
(c) red light
(d) yellow light
Answer:
(c) red light
336.The ultimate source of all metabolic energy on our earth is:
(a) green plants
(b) the sun
(c) O2
(d) O2 and H2O.
337.Light reaction takes place in:
(a) grana
(b) stroma
(c) mitochondria
(d) leucoplast.
Answer:
(a) grana
338.Plants purify air by:
(a) transpiration
(b) photosynthesis
(c) respiration
(d) absorption of water
339.In which process CO2 is given out:
(a) photosynthesis
(b) respiration
(c) transpiration
(d) translocation.
340.Excess glucose is stored in our body in the form of:
(a) glycogen
(b) fat
(c) protein
(d) cholesterol.
341.Trypsin enzyme is found in:
(a) gastric juice
(b) bile juice
(c) pancreatic juice
(d) intestinal juice
342.Which is the correct sequence of the air passage in man:
(a) Nasal cavity → Pharynx → Larynx → Trachea → Bronchi → Alveoli
(b) Nasal cavity → Larynx → Pharynx → Trachea → Bronchi → Alveoli
(c) Nasal cavity → Pharynx → Trachea → Larynx → Bronchi → Alveoli
(d) Nasal cavity → Trachea → Larynx → Bronchi → Alveol
343.Number of lobes in right and left lungs of man are:
(a) 3 and 2
(b) 2 and 3
(c) 4 and 2
(d) 2 and 4
344.In lungs CO2 rich blood comes from:
(a) different parts of the body
(b) left ventricle
(c) right ventricle
(d) liver
345.Blood vessel which carries oxygenated blood from lungs is:
(a) pulmonary vein
(b) pulmonary artery
(c) coronary artery
(d) superior venacava
346.Rate of respiration in man is:
(a) about 28 times per minute
(b) 12 to 15 times per minute
(c) 25 times per minute
(d) 72 times per minute
Answer:
(b) 12 to 15 times per minute
347.Number of alveoli in lungs is:
(a) 30 thousand
(b) 30 lac
(c) 3 crore
(d) 30 crore
Answer:
(d) 30 crore
348.Lungs are enclosed in:
(a) perichondrium
(b) peritoneum
(c) pleural membrane
(d) pericardium.
349.Lymph does not contain:
(a) water
(b) white blood corpuscles
(c) proteins
(d) red blood corpuscles
350.Which blod corpuscles destroy bacteria?
(a) W.B.C
(b) R.B.C
(c) blood platelets
(d) all these
351.Main function of haemoglobin is:
(a) reproduction
(b) to kill harmful bacteria
(c) transport of O2
(d) to make blood colourless
352.Arteries have:
(a) thick wall without valves
(b) thick wall with valves
(c) thin wall with valves
(d) thin wall without valves
353.During respiration energy is stored in the form of:
(a) ADP
(b) ATP
(c) NADP
(d) inorganic phosphate.
.
354.Glycolysis takes place in:
(a) cytoplasm
(b) chloroplast
(c) mitochondria
(d) ribosome.
355.Which of the following substance is formed during anaerobic respiration?
(a) ethyl alcohol
(b) glycerol
(c) glucose
(d) ethylene
356.In plants respiration takes place:
(a) during day time only
(b) during night time only
(c) during evening time only
(d) during day and night
357.During respiration in human body:
(a) new cells are formed
(b) glucose is oxidized
(c) proteins are formed
(d) glucose is formed
358.During aerobic respiration one molecule of glucose produces:
(a) 32 ATP
(b) 19 ATP
(c) 38 ATP
(d) 30 ATP
359.Translocation of food takes place by:
(a) xylem
(b) phloem
(c) parenchyma
(d) cambium
360.Pulmonary vein brings blood into:
(a) right auricle
(b) left auricle
(c) left ventricle
(d) right ventricle
361.Which part of the alimentary canal of man does not secretes enzyme?
(a) mouth
(b) oesophagus
(c) stomach
(d) intestine
362.Amoeba ingests food with the help of:
(a) cilia
(b) mouth
(c) flagella
(d) pseudopodia
363.Impure blood from right ventricle goes into the:
(a) lungs
(b) heart
(c) skin
(d) liver
364 The air is purified in the following process by plants:
(a) transpiration
(b) photosynthesis
(c) respiration
(d) reproduction.
365.Food is translocated by phloem in the form of:
(a) sucrose
(b) protein
(c) hormone
(d) fats
366.Blood pressure is measured by:
(a) thermometer
(b) barometer
(c) galvanometer
(d) sphygmomanometer
367.Urea is produced from ammonia in the body of a man in:
(a) liver
(b) kidney
(c) spleen
(d) intestine
Liver
368.Malpighian body consists of:
(a) uriniferous tubule
(b) Bowman’s caspsule and glomerulus
(c) Bowman’s capsule and neck
(d) two limbs of loop of Henle
369.Pulmonary vein opens at:
(a) right auricle
(b) left auricle
(c) left ventricle
(d) right ventricle
370.Leaf like cartilaginous structure hanging in oesophagus is called:
(a) epipharynx
(b) epiglottis
(c) alveoli
(d) mucilage sheath.
371 Un-oxidised blood is circulated through pulmonary arteries into:
(a) heart
(b) lungs
(c) anterior and posterior aorta
(d) right auricle.
372.Liver secretes:
(a) saliva
(b) gastric juice
(c) bile
(d) pancreatic juice
373.Enzyme amylase acts upon:
(a) fats
(b) proteins
(c) carbohydrates
(d) salts
374.Muscle contraction of alimentary canal is called:
(a) digestion
(b) peristalsis
(c) circulation
(d) absorption
375.Pure blood is taken to various part of body by:
(a) veins
(b) vena cava
(c) right ventricle
(d) aorta
376.C shaped structure of alimentary canal is:
(a) stomach
(b) duodenum
(c) oesophagus
(d) vermiform appendi
377.The kidneys in human beings are a part of the system for:
(a) nutrition
(b) respiration
(c) excretion
(d) transportation
378.The xylem in plants are responsible for:
(a) transport of water
(b) transport of food
(c) transport of amino acids
(d) transport of oxygen.
379.The number of milk teeth present in humans are:
(a) 20
(b) 24
(c) 28
(d) 32
380.The length of oesophagus in humans is:
(a) 5.8 cm
(b) 25.30 cm
(c) 1.5 metres
(d) 15 feet
Answer:
(b) 25.30 cm
381.Gastric juice is secreted from:
(a) pancreas
(b) gall bladder
(c) stomach
(d) liver
382.What does a liver secrete?
(a) Saliva
(b) Gastric juice
(c) Bile juice
(d) Pancreatic juice
383.The energy currency is:
(a) DNA
(b) RNA
(c) ATP
(d) Chlorophyll
384.The product of alcholic fermentation is:
(a) ethyl alcohol
(b) methyl alcohol
(c) butanol
(d) All of these
385.Dixon and Jolly are associated with:
(a) ascent of sap
(b) osmosis
(c) absorption
(d) diffusion
386.Soluble only in water is:
(a) Vitamin A
(b) Vitamin D
(c) Vitamin K
(d) Vitamin C
Answer.d
Read the following and answer any four questions from (i) to (v).
All living cells need nutrients, O, and other essential substances. Also, the waste and harmful substances need to be removed continuously for healthy functioning of cells. So, a well developed transport system is mandatory for living organisms. Complex organisms have special fluids within their bodies to transport such materials. Blood is the most commonly used body fluid by most of the higher organisms. Lymph also helps in the transport of certain substances.
(387) Which of the following does not exhibit phagocytic activity?
(a) Monocytes
(b) Neutrophils
(c) Basophil
(d) Macrophage
(388) Amount of blood corpusles in changed in dengue fever. One of the common symptoms observed in people infected with dengue fever is
(a) significant decrease in RBC count
(b) significant decrease in WBC count
(c) significant decrease in platelets count
(d) significant increase in platelets count
(389) Why are WBCs called soldiers of the body?
(a) They are capable of squeezing out of blood capillaries.
(b) They are manufactured in bone marrow.
(c) They fight against disease causing germs.
(d) They have granular cytoplasm with lobed nucleus
(390) Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body.
(a) Erythrocytes
(b) Neutrophils
(c) Leucocytes
(d) Thrombocytes
(391) Which of the following is the correct feature of lymph?
(a) It is similar to the plasma of blood, but is colourless and contains less proteins.
(b) It is similar to the WBCs of blood, but is colourless and contain more proteins.
(c) It is similar to the RBCs of blood and red in colour.
(d) It contains more fats.
Question 2:
Read the following and answer any four questions from (i) to (v).
Heterotrophic nutrition is a mode of nutrition in which organisms obtain readymade organic food from outside sources. The organisms that depend upon outside sources for obtaining organic nutrients are called heterotrophs.
Heterotrophic nutrition is of three types: saprophytic, parasitic and holozoic nutrition.
(392) Which of the following is a parasite?
(a) Yeast
(b) Taenia
(c) Amoeba
(d) Earthworm
(393) Which of the following is an example of saprotroph?
(a) Grass
(b) Mushroom
(c) Amoeba
(d) Paramecium
(394) Heterotrophic nutrition involves
(a) production of simple sugar from inorganic compounds
(b) utilisation of chemical energy to prepare food
(c) utilisation of energy obtained by plants
(d) all of these.
(395) In Paramecium, food enters the body through
(a) mouth
(b) pseudopodia
(c) cilia
(d) cytostome
396. Assertion (A) : Plants lack excretory organs.
Reason (R) : Plants usually absorb essential nutrients.
397.Assertion (A) : In anaerobic respiration, one of the end product is alcohol.
Reason (R) : There is an incomplete breakdown of glucose.
398.Assertion (A) : In plants there is no need of specialised respiratory organs.
Reason (R) : Plants do not have great demands of gaseous exchange.
399.Assertion (A) : Bile is essential for digestion of lipids.
Reason (R) : Bile juice contains enzymes.
400.. Assertion (A) : Carbohydrate digestion mainly takes place in small intestine.
Reason (R) : Pancreatic juice contains the enzyme lactase
401.Assertion (A) : Aerobic respiration requires less energy as compared to anaerobic respiration.
Reason (R) : Mitochondria is the powerhouse of the cell.
402.Assertion (A): Arteries are thick-walled and elastic in nature.
Reason (R) : Arteries have to transport blood away from the heart.
403.Assertion (A) : Human heart is four-chambered.
Reason (R) : Vena cava is the only artery that supplies deoxygenated blood to the heart.
404. Assertion (A): Energy is required to carry out different life processes.
Reason (R) : Energy is obtained in the form of ATP in the mitochondria.
405.Assertion (A): Rings of cartilage are present in the throat,
Reason (R) : These ensure that the air-passage does not collapse
406.Assertion (A): Pyruvate is a six-carbon molecule
Reason (R) : It is prepared in the cytoplasm as the first step to cellular respiration
407.Assertion (A): Molecular movements are needed for life.
Reason (R): Body structures made up of these molecules need continuous repair and maintenance
408.Assertion (A): Diffusion does not meet high energy requirements of multi-cellular organisms
Reason (R) : Diffusion is a fast process but occurs at the surface of the body.
409.Assertion (A): The opening and closing of the pore is a function of the guard cells.
Reason (R) : Stomatal pores are the site for exchange of gases by diffusion.
410.Assertion (A): The purpose of making urine is to filter out undigested food from intestine
Reason (R): Kidneys filter the waste and produce urine,
411.Assertion (A): The inner lining of the small intestine has numerous finger-like projections called villi.
Reason (R) : The villi increase the surface area for absorption.
412.Assertion (A): In human beings, the respiratory pigment is haemoglobin
Reason (R) : It is a type of protein which has high-affinity carbon dioxide.
413.Assertion : The plants store some of the waste products in their body parts.
Reason: Raphides are the solid waste products of plants
414.Assertion : The movement of water and dissolved salts in xylem is always upwards.
Reason: ‘The upward movement of water is due to low pressure created by transpiration.
415.Assertion : Photosynthesis takes place in green parts of the plants.
Reason: Photosynthesis always takes place in leaves
416.Assertion: The average number of heart beat of a person at rest is about 80 per minute.
Reason: One contraction and relaxation of the heart constitutes a complete heart beat.
417.Assertion : Ureters are the tubes which carry urine from kidneys to the bladder.
Reason: Urine is stored in the urethra.
418.Assertion : Ventricles have thicker walls than auricles.
Reason: Ventricles have to pump blood into various organs with great pressure
419.Assertion : Capillaries are the thinnest blood vessels.
Reason: Capillaries connect the branches of arteries and veins.
418.Assertion : Blood takes up oxygen from the alveolar air and release CO2 during exchange.
Reason: ‘The concentration of O, is more in alveolar air.
419.. Assertion: The large intestine is the largest part of the alimentary canal.
Reason: Tiger has a shorter small intestine, than herbivores.
420 Assertion : Most of the living organisms carry out aerobic respiration.
Reason: Mitochondria is the site of aerobic respiration in the cell.
421.Assertion : The Bowman’s capsule and the tubule together make a nephron.
Reason : The function of tubule is to allow the selective reabsorption of substances like glucose, amino
acids, urea, salts and water into the blood capillaries.
422.Assertion : Pancreatic juice digests starch, proteins and fats.
Reason: Pancreatic juice contains digestive enzymes like pancreatic amylase, trypsin and lipase.
423.Assertion: The accumulation of lactic acid in the muscles causes muscle cramps.
Reason: During vigorous physical exercise leg muscles respire anaerobically.
424.Assertion : Phloem helps in translocation of food from the leaves.
Reason: Phloem provides mechanical support to plant
425.Assertion : Trachea does not collapse, when there is no air in it.
Reason : Trachea is supported by cartilage.
426.Assertion: Lungs always contain a residual volume of air.
Reason: It is so to ensure enough time for the release of CO2 and for the absorption of O2 .
427.Assertion: In a healthy adult, the initial filtrate in the kidneys is about 180 L daily, but the actual volume excreted is only a litre a day.
Reason: Most of the filtrate is lost from the body in the form of sweat.
428.Assertion: Respiration is opposite of Photosynthesis
Reason: In Photosynthesis food is made from energy and in Respiration food is converted to energy.
429. Assertion: The four chambered heart does not mix oxygenated and deoxygenated blood.
Reason: Four chambered heart is found in mammals with advanced body functions.
430 Assertion: Translocation of food occurs in Plants.
Reason: Xylem tissue is responsible for Translocation.
431.Select the incorrect pair.
(a) Respiration- – Oxidation of food to obtain energy
(b) Nutrition – Obtaining and utilising nutrients
(c) Transportation- Response to stimuli
(d) Excretion – Removed of waste by-products
432 Which one of the following juices secreted in the human body does not contain any enzyme?
(a) Salivary juice
(b) Bile juice
(c) Gastric juice
(d) Pancreatic juice
433.Rings of cartilage present in the throat ensure that
(a) the air passage collapses
(b) the air passage does not collapse
(c) the air is filtered entering the nostrils
(d) None of the above
434.The function of the lymph fluid is to
(a) drains excess fluid from extracellular space back into the blood
(b) carries digested and absorbed fat from intestine
(c) circulates around the body and help in clotting of blood
(d) Both (a) and (b)
435.Amoeba shows following kind of nutrition
saprotrophic
holozoic
parasitic
autotrophic
436.Which is the correct sequence of body parts in the human alimentary canal?
Mouth → stomach → small intestine → large intestine → oesophagus
Mouth → oesophagus → stomach → small intestine → large intestine
Mouth → oesophagus → stomach → large intestine → small intestine
Mouth → stomach → oesophagus → smallintestine → large intestine
437One cell-thick vessels are called
Veins
Capillaries
Pulmonary artery
Arteries
4.38. Which process converts light energy to chemical energy ?
Respiration
transportation of water and minerals
photosynthesis
transpiration
439 . The extracellular fluid released from the capillaries is:
lymph
serum
mucus
plasma
440.
Which is the first enzyme to mix with food i the digestive tract?
Pepsin
Trypsin
Cellulose
Amylase
441.The small pores present of leaf’s surface are called
None of these
Guard cells
Stomata
Chlorophyll
442.The procedure used for cleaning the blood of a person by separating urea from it is called:
dialysis
double circulation
filtration
osmosis
443.The breakdown of pyruvate to give carbon di-oxide, water and energy takes place in
mitochondria
chloroplast
nucleus
cytoplasm
444.Which of the following events in the mouth cavity will be affected if salivary amylase is lacking in the saliva?
Starch breaking down into sugars
Proteins breaking down into amino acids
Fats breaking down into fatty acids and glycerol
Absorption of vitamins
445.Which of these juices is secreted by pancreas?
both Trypsin and Pepsin
Pepsin
Bile juice
Trypsin
446.Which element is used in the synthesis of proteins?
Carbon dioxide
Hydrogen
Nitrogen
Oxygen
447. In which mode of nutrition an organism derives its food from the body of another living organism without killing it?
Autotrophic nutrition
Parasitic nutrition
Saprotrophic nutrition
Holozoic nutrition
448.ASSERTION: The opening and closing of the pore is a function of the guard cells.
REASON: Stomatal pores are the site for exchange of gases by diffusion.
449. Temporary finger like extensions on amoeba are called
Pseudopodia
Cell membrane
Cell wall
Cilia
450.. Lipase acts on
Fats
All of these
Amino acids
Carbohydrates
451.ASSERTION: Arteries are thick-walled and elastic in nature.
REASON: Arteries have to transport blood away from the heart.
452. To differentiate a living from non-living the
movement of .......... is needed.
(a) Molecular structure
(b) Non-static movement
(c) In organic structure
(d) Molecular movements
453. The maintenance functions of living
organisms must go on even when they are
not doing
(a) Anything particular
(b) Sleeping
(c) Moving at constant speed
(d) Hibernation
454. Life process involves:
(a) Continuous process of maintaining
functions of living organism.
(b) All the activities being performed
during life cycle of an organism.
(c) Generation of energy for the purpose
of metabolism.
(d) Differs from individual to individual.
455. If the body size of the organisms is to grow:
(a) Additional carbon based food or raw
material is needed.
(b) Needs more energy to expand.
(c) Have to go through complex process
which sometimes is not possible.
(d) Needs lots of cell formation.
456. Due to the complexities of carbon sources,
different organism use:
(a) Different kinds of nutritional processes
(b) Different kind of growing processes
(c) Different kind of metabolism
(d) Different kind of cell structure
457. Since the environment is not under the
control of the individual organism, the
outside source of energy is quite:
(a) Varied
(b) Same
(c) Differ from case to case
(d) Under the control of organism
458. All the sources of energy need to be broken
down in the body and converted into:
(a) Uniform energy
(b) Molecular energy
(c) Chemical reactions
(d) Digestive process
459. Those reactions which are most common
chemical means to break-down molecules
are:
(a) Oxidizing-reducing reactions
(b) Hibernation
(c) Chemical reaction
(d) Needed for well being
460. The process of break-down of food sources
for cellular needs is known as
(a) Respiration
(b) Molecular breakup
(c) Excretion
(d) Molecular process
461. Which statement is not correct for single
celled organism:
(a) no specific organs for taking in food
needed.
(b) exchange of gases or removal of wastes
may be needed.
(c) single cell organisms are the newest
form of life.
(d) entire surface of the organism is in
contact with the environment.
462. The reason for single cell diffusion
inefficiency in multicellular organism is
(a) Cell diffusion is a complex process
(b) Big size and complex body designs
(c) Cell diffusion requires lots of time
(d) Cell diffusion is rather a simple
process to be carried out in multi cell
(a) Additional carbon based food or raw
material is needed.
(b) Needs more energy to expand.
(c) Have to go through complex process
which sometimes is not possible.
(d) Needs lots of cell formation.
456. Due to the complexities of carbon sources,
different organism use:
(a) Different kinds of nutritional processes
(b) Different kind of growing processes
(c) Different kind of metabolism
(d) Different kind of cell structure
457. Since the environment is not under the
control of the individual organism, the
outside source of energy is quite:
(a) Varied
(b) Same
(c) Differ from case to case
(d) Under the control of organism
458. All the sources of energy need to be broken
down in the body and converted into:
(a) Uniform energy
(b) Molecular energy
(c) Chemical reactions
(d) Digestive process
459. Those reactions which are most common
chemical means to break-down molecules
are:
(a) Oxidizing-reducing reactions
(b) Hibernation
(c) Chemical reaction
(d) Needed for well being
460. The process of break-down of food sources
for cellular needs is known as
(a) Respiration
(b) Molecular breakup
(c) Excretion
(d) Molecular process
461. Which statement is not correct for single
celled organism:
(a) no specific organs for taking in food
needed.
(b) exchange of gases or removal of wastes
may be needed.
(c) single cell organisms are the newest
form of life.
(d) entire surface of the organism is in
contact with the environment.
462. The reason for single cell diffusion
inefficiency in multicellular organism is
(a) Cell diffusion is a complex process
(b) Big size and complex body designs
(c) Cell diffusion requires lots of time
(d) Cell diffusion is rather a simple
process to be carried out in multi cell
463. In multi-cellular organisms, various body
parts have specialized in the functions they
perform with the help of:
(a) Specialized cells
(b) Multiple organs
(c) Multiple structure
(d) Specialized tissues
Sol : www.cbse.site/sc/fm113
464. The uptake of food and of oxygen in body
is done with the help of:
(a) Specialized tissues
(b) Specialized cells
(c) Multiple organs
(d) None of the above
Sol : www.cbse.site/sc/fm114
465. Various chemical reactions in body use
.......... for energy generation.
(a) Nitrogen and carbon
(b) Oxygen
(c) Carbon sources and oxygen
(d) None of the above
Sol : www.cbse.site/sc/fm115
466. The process by which all the by products
discarded from the body is known as:
(a) Respiration
(b) Sweating
(c) Excretion
(d) None of the above
Sol : www.cbse.site/sc/fm116
467. Choose the incorrect statement:
(a) We don’t need energy while not doing
any activity
(b) We release energy and feel tired while
doing various activities
(c) Energy is needed to maintain the
state of body
(d) Our body need to synthesize protein
to develop
Sol : www.cbse.site/sc/fm117
468. Organisms which uses simple food material
obtained from inorganic sources in the form
of carbon dioxide and water are:
(a) Single cell organism
(b) Multi cell organism
(c) Virus
(d) Autotrophs
469. Various organism breakdown the complex
substances in
20. Bio catalysts are also known as:
(a) Enzymes
(b) Autotrophs
(c) Heterotrophs
(d) Excretory tissue
Sol : www.cbse.site/sc/fm120
(a) Enzymes
(b) Autotrophs
(c) Heterotrophs
(d) Excretory tissue
Sol : www.cbse.site/sc/fm120
470. The heterotrophs survival depends direc
or indirectly on:
(a) Surroundings
(b) Ecology and surrounding
(c) Autotrophs
(c) Molecular structure
Sol : www.cbse.site/sc/fm121
471 Heterotrophic organisms include
(a) Animals and fungi
(b) Plants
(c) Bacteria and fungus
(d) Fungus only
Sol : www.cbse.site/sc/fm122
472Autotrophic organism requires .......... for
their survival.
(a) only carbon dioxide
(b) water and sunlight
(c) both (a) and (b)
(d) None of the Above
Sol : www.cbse.site/sc/fm123
473The process by which autotrophic organism
fulfill their energy requirement is known as
(a) Respiration
(b) Transpiration
(c) Photosynthesis
(d) Excretion
Sol : www.cbse.site/sc/fm124
474.The process by which autotrophs take in
substances from the outside and convert
them into stored forms of energy is known
as
(a) Photosynthesis
(b) Respiration
(c) Molecular breakup
(d) Cell diffusion
Sol : www.cbse.site/sc/fm125
475 Autotrophic organism converts of carbon
dioxide and water into carbohydrates in
the presence of
(a) Sunlight and carbon dioxide
(b) Sunlight and chlorophyll
(c) Carbon dioxide and Nitrogen
(d) Chlorophyll and carbon dioxide
Sol : www.cbse.site/sc/fm126
476. .......... are utilised for providing energy to
the plants.
(a) Carbohydrates
(b) Enzymes
(c) Protein
(d) Carbon dioxide
Sol : www.cbse.site/sc/fm127
477.Following form of energy acts as internal
energy reserve for plants
(a) Protein
(b) Carbohydrates
(c) Starch
(d) Fructose
Sol : www.cbse.site/sc/fm128
478.Human body stores energy in form of:
(a) Glucose
(b) Insulin
(c) glycogen
(d) Fructose
Sol : www.cbse.site/sc/fm129
479. During the process of photosynthe
absorption of light energy is done by
(a) Leaf
(b) Midrib
(c) Vein
(d) Chlorophyll
Sol : www.cbse.site/sc/fm130
480. Process of conversion of light energy to
chemical energy and splitting of water
molecules into hydrogen and oxygen in
plants is known as
(a) Photosynthesis
(b) Photoperiodism
(c) Plant nutrition
(d) Plant hormone functions
Sol : www.cbse.site/sc/fm131
481. Which plants take up carbon dioxide at
night and prepare an intermediate?
(a) Desert plants
(b) Bamboo
(c) Coattails
(d) Palm tree
Sol : www.cbse.site/sc/fm132
482.The green organelle on surface of leaves
containing chlorophyll are known as
(a) Xylem
(b) Epidermis
(c) Chloroplasts
(d) Vascular bundle
Sol : www.cbse.site/sc/fm133
483.Tiny pores present on the surface of the
leaves are known as
(a) Chloroplasts
(b) Xylem
(c) Guard cell
(d) Stomata
Sol : www.cbse.site/sc/fm134
484.Massive amounts of gaseous exchange takes place in the leaves through stomata for the purpose of
(a) Photosynthesis
(b) Carrying carbon dioxide
(c) Reduction of carbon dioxide
(d) Generation of carbohydrates
Sol : www.cbse.site/sc/fm135
485.. The exchange of gases in plants can be
done through
(a) Surface of plant
(b) Roots
(c) Leaves
(d) All of the above
Sol : www.cbse.site/sc/fm136
486. The purpose of closing the pores by the
plants when it doesn’t need photosynthesis
is
(a) To save the water
(b) To save energy
(c) To save food
(d) None of the above
Sol : www.cbse.site/sc/fm137
487.The opening and closing of the leaf pores is
a function of the
(a) Guard cells
(b) Stomata
(c) Chloroplast
(d) Vascular bundle
Sol : www.cbse.site/sc/fm138
488.The reason for swelling of guard cell is due
to the presence of
(a) Sunlight
(b) Food
(c) Water
(d) Carbon dioxide
Sol : www.cbse.site/sc/fm139
489........... is an essential element used in the
synthesis of proteins and other compounds
in plants.
(a) Oxygen
(b) Water
(c) Nitrogen
(d) Carbon dioxide
Sol : www.cbse.site/sc/fm140
490.Most of the plant’s nitrogen, phosphorus,
iron and magnesium are taken up from the
(a) Aquatic sources
(b) Soil
(c) Mountains
(d) Sea water
Sol : www.cbse.site/sc/fm141
491.Inorganic nitrates or nitrites helps the
plants for the synthesis of:
(a) Carbohydrates
(b) Nitrogen
(c) Carbon dioxide
(d) Protein
Sol : www.cbse.site/sc/fm142
492.Atmospheric nitrogen is converted into
organic matter by with plant with the help
of
(a) Bacteria
(b) Organic compounds
(c) Air born viruses
(d) Fertilizers
Sol : www.cbse.site/sc/fm143
493.. Each organism is adapted to its
environment, the type of nutrition taken
by them depends on
(a) Environment
(b) Availability of food
(c) How it is obtained by the organism
(d) All of the above
Sol : www.cbse.site/sc/fm144
494. Organism who break down the food outside
their body are
(a) Fungi
(b) Virus
(c) Tape worm
(d) None of the above
Sol : www.cbse.site/sc/fm145
495.Organisms which derive nutrition from
plants or animals without killing them are
(a) Ticks
(b) Yeast
(c) Mushroom
(d) Fungi
Sol : www.cbse.site/sc/fm146
496.Single cell organism take food by their
(a) Entire surface
(b) Food vacuole
(c) Nucleus
(d) Pseudopodia
Sol : www.cbse.site/sc/fm148
497.The broken down food into simpler form in
amoeba is diffused into
(a) Cytoplasm
(b) Ribosome
(c) DNA
(d) Mesosome
Sol : www.cbse.site/sc/fm149
498. Identify the micro-organism whose nutrition
type is shown below :
(a) Food bacteria
(b) Yeast
(c) Fungus
(d) Amoeba
Sol : www.cbse.site/sc/fm147
499 The undigested material is .......... in some
micro-organism.
(a) Absorbed in the surface
(b) Thrown out
(c) Helps for further growth
(d) None of the above
Sol : www.cbse.site/sc/fm150organism like
500.Some unicellupar paramoecium
take food at a
(a) Specific spot
(b) Entire surface
(c) Nucleus
(d) Food vacuole
501 The alimentary canal in human beings is
extended from:
(a) Small intestine to large intestine
(b) Entire large intestine
(c) Small intestine to anus
(d) Mouth to anus
502. “Water” like fluid in our mouth is secreted
by
(a) Pancreas
(b) Thyroid
(c) Pituitary
(d) Salivary gland
503. The enzyme that break down starch into
simpler form is known as
(a) Salivary amylase
(b) Lipase
(c) Maltase
(d) Trypsin
504. The digestion in stomach is taken care by
the .......... which is present in the wall of
the stomach.
(a) Gastric glands
(b) Digestive juices
(c) Salivary amylase
(d) Lipase
505. From the mouth the food is taken to the
stomach through .......... .
(a) Bile duct
(b) Pancreas
(c) Diaphragm
(d) Oesophagus
506 Hydrochloric acid facilitates the action of
.......... .
(a) keratin
(b) collagen
(c) elastin
(d) pepsin
507. Identify the secretion inside the stomach
which helps to protect the inner lining of
stomach from the action of acid
(a) Mucus
(b) Hydrochloric acid
(c) Digestive juices
(d) Enzymes
508 The function of sphincter muscle is to
(a) Regulate digestive proces
(b) Improves digestion
(c) Release digestive juices
(d) Regulate exit of food
509 The .......... delivers the digestive juice to
the small intestine through small tubes
called ducts.
(a) Stomach
(b) Pancreas
(c) Large intestine
(d) Anus
510. The longest part of alimentary canal in
human body is
(a) Small intestine
(b) Large intestine
(c) Food pipe
(d) None of the abov
511. Which body organ is responsible for the
complete digestion of carbohydrates, fats
and protein?
(a) Stomach
(b) Large intestine
(c) Liver
(d) Small intestine
512 The food coming from the stomach is
.......... .
(a) Alkaline
(b) Acidic
(c) Neutral
(d) None of these
513 The inner lining of the .......... has numerous
finger-like projections called villi which
increase the surface area for absorption.
(a) small intestine
(b) large intestine
(c) stomach
(d) pancreas
514Tooth decay will NOT be prevented by
.......... .
(a) regular brushing
(b) regular flossing
(c) regular visits to the dentist
(d) increasing the consumption of sucrose
515 In the given activity, the lime water of
which test tube will get milky faster?
(a) Test tube (a)
(b) Test tube (b)
(c) Both test tube will take same time
(d) Can’t say
516. Which gas turns lime water milky?
(a) Oxygen
(b) Hydrogen
(c) Carbon dioxide
(d) Nitrogen
517 This process of break-down of glucose, a
six-carbon molecule, into a three-carbon
molecule pyruvate, takes place in
(a) Cytoplasm
(b) Mitochondria
(c) Golgi bodies
(d) Endoplasmic reticulum
518.What is “Fermentation”?
(a) The process of break-down of glucose,
a six-carbon molecule, into a three-
carbon molecule pyruvate.
(b) The breakdown of organic substances
by organisms to release energy in the
absence of oxygen.
(c) The breakdown of organic substances
by organisms to release energy in the
presence of oxygen.
(d) None of the above
519.Breakdown of pyruvate using oxygen takes
place in the
(a) Cytoplasm
(b) Mitochondria
(c) Golgi bodies
(d) Endoplasmic reticulum
which test tube will get milky faster?
(a) Test tube (a)
(b) Test tube (b)
(c) Both test tube will take same time
(d) Can’t say
516. Which gas turns lime water milky?
(a) Oxygen
(b) Hydrogen
(c) Carbon dioxide
(d) Nitrogen
517 This process of break-down of glucose, a
six-carbon molecule, into a three-carbon
molecule pyruvate, takes place in
(a) Cytoplasm
(b) Mitochondria
(c) Golgi bodies
(d) Endoplasmic reticulum
518.What is “Fermentation”?
(a) The process of break-down of glucose,
a six-carbon molecule, into a three-
carbon molecule pyruvate.
(b) The breakdown of organic substances
by organisms to release energy in the
absence of oxygen.
(c) The breakdown of organic substances
by organisms to release energy in the
presence of oxygen.
(d) None of the above
519.Breakdown of pyruvate using oxygen takes
place in the
(a) Cytoplasm
(b) Mitochondria
(c) Golgi bodies
(d) Endoplasmic reticulum
520. What causes cramps in our muscles during
sudden activity?
(a) The pyruvate gets converted into
lactic acid to release of energy.
(b) The pyruvate gets converted into
carbon dioxide to release of energy.
(c) The pyruvate gets converted into
ethanol to release of energy.
(d) The pyruvate gets converted into
glucose to release of energy.
521. Pyruvate is a-
(a) three-carbon molecule
(b) four-carbon molecule
(c) five-carbon molecule
(d) six-carbon molecule
522. During the process of respiration in plants,
the direction of diffusion of oxygen and
carbon dioxide depends upon
(a) the environmental conditions
(b) the requirements of the plant
(c) both (a) and (b)
(d) none of these
523.The rate of breathing in aquatic organisms
is much faster than that seen in terrestrial
organisms, because-
(a) the amount of dissolved oxygen in
water is fairly high as compared to
the amount of oxygen in the air.
(b) the amount of dissolved oxygen in
water is fairly low as compared to the
amount of oxygen in the air.
(c) aquatic organisms need more oxygen
to breath.
(d) aquatic organisms do not have proper
organs for breathing.
524........... helps in preventing the collapse of
the air passage during breathing.
(a) Nostrils
(b) Mucus
(c) Lungs
(d) Rings of cartilage
525.The respiratory route of air in the
respiratory tract of human is:
(a) nostrils " pharynx " larynx "
trachea " alveoli.
(b) alveoli " pharynx " larynx " trachea
" nostrils.
(c) alveoli " larynx " trachea " pharynx
" nostrils.
(d) nostrils " trachea " pharynx "
larynx " alveoli.
526.. Normal range of haemoglobin content in
human beings is-
(a) For men, 12.0 to 15.5 grams per
decilitre. For women, 13.5 to 17.5
grams per decilitre.
(b) For men, 13.5 to 17.5 grams per
decilitre. For women, 12.0 to 15.5
grams per decilitre.
(c) For men, 10.5 to 17.5 grams per
decilitre. For women, 10.0 to 15.5
grams per decilitre.
(d) For men, 15.5 to 20.5 grams per
decilitre. For women, 12.0 to 15.5
grams per decilitr
527. What type of tissue is blood?
(a) muscle tissue
(b) nervous tissue
(c) fluid connective tissue
(d) epithelial tissue
528.. Blood consists of a fluid medium called
.......... in which the cells are suspended.
(a) Plasma
(b) RBCs
(c) Platelets
(d) WBCs
529.Oxygen is carried by the .......... cells.
(a) white blood cells
(b) red blood cells
(c) muscle cells
(d) nerve cells
530.The function of valves present in auricles
and ventricles is-
(a) It ensures that the blood flows only in
one direction.
(b) Helps in coagulation of blood
(c) Destroy the worn out blood cells
(d) Measure pressure of body fluids
531.The vein which brings clean blood from the
lungs into the heart is known as:
(a) Pulmonary vein
(b) Hepatic vein
(c) Superior vena cava
(d) Pulmonary artery
532. In higher vertebrates, systemic circulation
takes place between .......... .
(a) body parts and lungs
(b) body parts and heart
(c) heart and body parts
(d) lungs and heart
533.The upper two chambers of the heart are
called .......... .
(a) aorta
(b) auricles
(c) septa
(d) ventricles
534.Contraction of auricles of the heart is called
.......... .
(a) Systole
(b) Diastole
(c) Heart beat
(d) Hypertension
535.Which instrument is used to measure blood
pressure?
(a) Thermometer
(b) Electrocardiograph
(c) Pulse recorder
(d) Sphygmomanometer
536. Amphibians or many reptiles have ..........
hearts.
(a) two-chambered
(b) three-chambered
(c) four-chambered
(d) five-chambered
537. Cells formed in the bone marrow are ..........
(a) Erythrocytes only
(b) Leucocyte only
(c) Both erythrocytes and leucocyte
(d) Platelets and blood cells
538.The normal rate of heart beat in an adult
is .......... per minute.
(a) 67 times
(b) 72 times
(c) 90 times
(d) 100 times
539.Arteries are the vessels which carry blood
away from the
(a) Various body parts to the heart
(b) Heart to various organs of the body
(c) Heart to lungs
(d) Lungs to heart
540.. Which part of blood helps in clotting?
(a) WBCs
(b) RBCs
(c) Platelets
(d) Plasma
541.Arteries and veins are connected by a
network of extremely narrow tubes called:
(a) Sieve tubes
(b) Capillaries
(c) Vena cava
(d) Valves
542.The pulmonary artery arises from the
.......... .
(a) right auricle
(b) left auricle
(c) left ventricle
(d) right ventricle
543.. Heart is surrounded and protected by
.......... .
(a) Retro peritoneum
(b) Muscles
(c) Pericardium
(d) Lungs
544.The valve that prevents backward flow
of blood from the left auricle to the right
auricle is the .......... .
(a) mitral valve
(b) auriculoventricular valve
(c) tricuspid valve
(d) semilunar valve
545.The chief function of lymph in a mammalian
body is to .......... .
(a) destroy the worn out blood cells
(b) produce leucocyte
(c) destroy pathogens
(d) produce a hormone
546.The number of chambers in a human heart
is .......... .
(a) 3
(b) 2
(c) 4
(d) 5
547. The colour of blood plasma is:
(a) Red
(b) Pale yellow
(c) Yellowish green
(d) Pink
548.The only reptile having 4 chambered heart
is:
(a) Snake
(b) Turtle
(c) Lizard
(d) Crocodile
549.What is normal blood pressure in humans?
(a) 120/80 mm of Hg
(b) 130/60 mm of Hg
(c) 140/70 mm of Hg
(d) 140/ 90 mm of Hg
550. Thrombocytes is another name for
(a) Red corpuscles
(b) Platelets
(c) Plasma
(d) White blood corpuscles
551. Vitamin .......... helps in blood clotting.
(a) Vitamin A2
(b) Vitamin B
(c) Vitamin E4
(d) Vitamin K
552.The richest natural source of minerals for
plants is .......... .
(a) chemical fertilizers
(b) soil
(c) air
(d) water
553 Chlorophyll-containing organs of plant are-
(a) Stem
(b) Roots
(c) Leaves
(d) Flowers
554 The .......... moves water and minera
obtained from the soil.
(a) phloem
(b) xylem
(c) parenchyma
(d) collenchyma
555.The water which is lost through the stomata
is replaced by
(a) water from the xylem vessels in the
leaf
(b) water from the phloem vessels in the
leaf
(c) water from the veins in the leaf
(d) none of the above
556 The effect of root pressure in transport of
water is more important at
(a) day time
(b) night time
(c) both (a) and (b)
(d) none of these
557.Transpiration helps :
(a) in the absorption
(b) in the upward movement of water
minerals dissolved in it from roots to
the leaves
(c) in temperature regulation
(d) All of the above
558. Which process is shown by the following
picture?
(a) Movement of food during
photosynthesis in a tree
(b) Movement of water during
transpiration in a tree
(c) Movement of minerals during in a
tree
(d) Movement of carbon dioxide during in
a tree
559. Trans location is the process in which
plants deliver:
(a) minerals from leaves to other parts of
the plant
(b) plant growth hormones from leaves to
other parts of the plant
(c) water and organic substance from
leaves to other parts of the plant
(d) all of the above
560.The trans location of food and other
substances takes place in the sieve tubes
with the help of adjacent companion cells
in :
(a) upward directions
(b) downward directions
(c) both upward and downward directions
(d) none of these
561.Which of the following substance is obtained
from the soil by the plants:
(a) oxygen
(b) carbon dioxide
(c) nitrogen
(d) all of the above
562 When the materials like sucrose are
transferred to phloem tissue, the osmotic
pressure of the tissue .......... leading to
.......... of water into/from it.
(a) Increases, entry
(b) Decreases, entry
(c) Increases, exit
(d) Decreases, exit
563.Plants use the energy stored in ATP to
accomplish the process of transportation of
(a) Water and minerals
(b) Carbon dioxide
(c) Oxygen
(d) Food
564........ helps in trans location of food in
plants.
(a) Xylem
(b) Phloem
(c) Palisade cells
(d) Root hairs
565.The process of movement of solvent particles
from region of less solute concentration to
region of high solute concentration through
semi permeable membrane is called ...........
(a) Diffusion
(b) Osmosis
(c) Transpiration
(d) Translocation
566.The biological process involved in the
removal of these harmful metabolic wastes
from the body is called
(a) Photosynthesis
(b) Respiration
(c) Excretion
(d) Translocation
567.The excretory system of human beings
includes a pair of kidneys, a pair of ureters,
a urinary bladder and a urethra
(a) a pair of kidneys, a pair of ureters
(b) a urinary bladder and a urethra
(c) a pair of kidneys, a urinary bladder
and a urethra
(d) a pair of kidneys, a pair of ureters, a
urinary bladder and a urethra
568.The purpose of making urine is to:
(a) filter out waste products from the
blood
(b) filter out minerals from the blood
(c) filter out water from the blood
(d) none of these
569.Choose the correct pathway of urine in our
body-
(a) Kidney " ureter " urethra " urinary
bladder
(b) Kidney " Ureter " urinary bladder
" urethra
(c) Kidney " urinary bladder " urethra
" Ureter
(d) Kidney " urethra " Ureter " urinary
bladder
570.Which of the main toxic waste that kidney
filters from blood?
(a) Ammonia
(b) Uric acid
(c) Urea
(d) Water
571.The functional unit of kidney is:
(a) Nephron
(b) Neuron
(c) Glomerulus
(d) Bowman’s Capsule
572. Just as CO2 is removed from the blood in
the lungs, nitrogenous waste such as urea
or uric acid are removed from blood in the -
(a) Kidney
(b) Urinary bladder
(c) Urethra
(d) Ureters
573. The given diagram is the structure of a/an-
(a) Alimentary canal
(b) Respiratory tract
(c) Nephron
(d) Small intestine
574.. An artificial kidney is a device to remove
nitrogenous waste products from the blood
through-
(a) Diaphragm
(b) Dialysis
(c) ECG
(d) Electrolysis
575.Normally, in a healthy adult, the initial
filtrate in the kidneys is about :
(a) 100 L/day
(b) 150 L/day
(c) 180 L/day
(d) 200 L/day
576 Sweating is meant for:
(a) Regulation of body temperature
(b) Removal of excess salt
(c) Removal of excess water
(d) All of the above
577.Oxygen is a waste product generated during
.......... in plants.
(a) Respiration
(b) Photosynthesis
(c) Both respiration and photosynthesis
(d) None of the above
578.Many-plant waste products are stored in:
(a) Chloroplast
(b) Mitochondria
(c) Cellular vacuoles
(d) Cytoplasm
579.Which one of the following is the final
product of photosynthesis?
(a) Mineral salt
(b) Starch
(c) Fat
(d) Protein
580. What is the mode of nutrition in fungi?
(a) Parasitic
(b) Autotrophic
(c) Heterotrophic
(d) Saprophytic
581.How many pairs of salivary glands are
found in humans?
(a) Four
(b) Two
(c) Three
(d) Six
582.Proteins A Peptones
Identify the enzyme A involved in the
above reaction.
(a) Lipase
(b) Pepsin
(c) Bile juice
(d) Salivary amylase
583.In photosynthesis, which substances are
used up, which are produced and which are
necessary, but remain unchanged after the
reaction?
Used up Produced Remain
Unchanged
(a) Water Oxygen Chlorophyll
(b) Oxygen Starch Cellulose
(c) Carbon
dioxide
Water Oxygen
(d) Chlorophyll Carbon
dioxide
Water
584.The diagram shows the arrangement of
cells inside the leaf of a green plant. (No
cell contents are shown).
Which of the following cells normally
contain chloroplasts?
(a) 2 and 4
(b) 2 and 3
(c) 1 and 2
(d) 1 and 4
585.Choose the forms in which most plants
absorb nitrogen:
1. Atmospheric nitrogen
2. Proteins
3. Nitrates and nitrites
4. Urea
Choose the correct option.
(a) 1 and 4
(b) 3 and 4
(c) 1 and 2
(d) 2 and 3
586. When a person eats some egg white,
proteins and water enter the stomach.
Which substances are found leaving the
stomach and leaving the small intestine?
Leaving the
Stomach
Leaving the
Small Intestine
(a) Protein, amino
acids and water
Water
(b) Amino acids and
water
Amino acids and
water
(c) Fatty acids,
glycerol and
water
Fatty acids,
glycerol and
water
(d) Protein and
water
Fatty acids and
glycerol
587.Only two of the following Statements
accurately describe what happens in the
mouth.
1. Amylase breaks down large starch
molecules into smaller maltose molecules.
2. Chewing increases the surface area of
food for digestion.
3. Saliva emulsifies fats into smaller
droplets.
4. Teeth breakup large insoluble molecules
into smaller soluble molecules.
Which statements are correct?
(a) 1 and 2
(b) 2 and 3
(c) 3 and 4
(d) 1 and 4
588.The process of conversion of glucose into
pyruvic acid occurs in
(a) chloroplast
(b) mitochondria
(c) outside the cell
(d) cytoplasm
589. During vigorous physical exercise, lactic
acid is formed from glucose inside the
muscle cells because
(a) there is excess of carbon dioxide
(b) there is lack of water
(c) there is lack of oxygen
(d) none of the above
590.The diagram shows part of the human gas
exchange system.
Here, W X, ,Y and Z are?
Bronchus Bronchiole Larynx Trachea
(a) W X Z Y
(b) X Z Y W
(c) Y W X Z
(d) Z Y W X
591.. An experiment is set up as shown. Flasks
1 and 2 contain lime water. Air is pumped
through the flasks.
What is the appearance of lime water in
flasks 1 and 2 after a period of ten minutes?
Flask 1 Flask 2
(a) Clear Clear
(b) Clear White/Cloudy
(c) White/Cloudy Clear
(d) White/Cloudy White/Cloudy
592 Which of the following is the correct route
for blood flow in a human?
(a) Right atrium " Right ventricle "
Lungs " Left atrium " Left ventricle
(b) Right atrium " Right ventricle "
Left ventricle " Left atrium " Lungs
(c) Left atrium " Left ventricle " Right
ventricle " Right atrium " Lungs
(d) Left atrium " Left ventricle " Lun
gs Right ventricle " Right atrium
593.The table shows the characteristics of blood
in one blood vessel of the body.
Oxygen
concentration
Carbon dioxide
concentration
Pressure
High Low High
Which blood vessel contains blood with
these characteristics?
(a) Vena cava
(b) Pulmonary vein
(c) Aorta
(d) Pulmonary artery
594.The waste product from skin is known as?
(a) Salts
(b) Urine
(c) Sweat
(d) Urea
595.What happens if a person has one kidney
removed?
(a) They will accumulate excess urea
(b) They will die
(c) They will continue as normal
(d) They will stop making urine
595.A terrestrial animal must be able to ..........?
(a) Excrete large amount of water
(b) Actively pump salts through skin
(c) Excrete large amount of salts in urine
(d) Conserve water
596. Conversion of excess of amino acids into
urea is done in?
(a) Lungs
(b) Large intestine
(c) Liver
(d) Cloaca
598. The best long term solution for kidney
failure is?
(a) Dialysis
(b) Kidney transplant
(c) Surgery
(d) Both (a) and (b)
599. Flame cells are the excretory structures in
(a) Arthropods
(b) Platyhelminthes
(c) Annelids
(d) Crustaceans.
600.Main excretory organ of humans is?
(a) Lungs
(b) Skin
(c) Kidney
(d) Liver
601.The excretory system of human beings
includes?
(a) A pair of kidneys
(b) A pair of ureters
(c) A urinary bladder and a urethra
(d) All of the above
602.Which of the following harmful products is
not produced in the biochemical reactions
of the cell of living organisms?
(a) Urea
(b) Uric acid
(c) Ammonia
(d) Lymph
603.The blood vessel that begins and ends in
capillaries?
(a) Renal vein
(b) Renal artery
(c) Hepatic artery
(d) Hepatic portal vein
604. In our body which organ is responsible for
conversion of ammonia into urea?
(a) Kidney
(b) Lungs
(c) Heart
(d) Liver
605. What is the name of the blood vessels that
provide nutrition of the heart wall?
(a) Pulmonary arteries
(b) Pulmonary veins
(c) Coronary arteries
(d) Descending aorta
606.Which of the following is the correct
features of ‘lymph’?
(a) It is similar to the plasma of blood,
colourless and contain less protein.
(b) Similar to the WBC of blood,
colourless and contain more protein.
(c) Similar to the RBC of blood and red
in colour.
(d) It contains more fat
607. By which cell the process of opening and
closing of stomata is controlled?
(a) Epidermal Cell
(b) Guard Cell
(c) Accessory Cell
(d) Leaf Cell
608.Which organ is known as “Blood bank” ?
(a) Heart
(b) Liver
(c) Spleen
(d) Kidney
609.Which of the following is carried by lymph
which is digested and absorbed from
intestine?
(a) Fat
(b) Protein
(c) Minerals
(d) Carbohydrates
610.Tricuspid valve is present in ?
(a) Right atrium and right ventricle
(b) Left atria and left ventricle
(c) Wall of atrium
(d) Wall of ventricle
611.Which of the following helps in maximum
transport of oxygen?
(a) Red blood corpuscles
(b) Platelets
(c) Plasma
(d) White blood corpuscles
612.Four chambered heart is characteristics
feature of?
(a) Fishes
(b) Amphibians
(c) Reptiles
(d) Mammals
613.Where does the maximum exchange of
material between blood and surrounding
cells occur?
(a) Heart
(b) Capillaries
(c) Arteries
(d) Veins
614 Dead cells of phloem are
(a) Companion cells
(b) Phloem fibres
(c) Phloem parenchyma
(d) Sieve tubes
615.Largest heart is found in
(a) Elephant
(b) Giraffe
(c) Crocodile
(d) Lion
616.Choose the correct statement that describe
the arteries?
(a) They have thick elastic walls, blood
flows under high pressure, collect
blood from different organs and bring
it back to the heart.
(b) They have thin walls with valves
inside, blood flows under low pressure
and carry blood away from the heart
to various organs of the body.
(c) They have thick elastic walls, blood
flows under low pressure, carry blood
from the heart to various organs of
the body.
(d) They have thick elastic walls without
valves inside, blood flows under high
pressure and carry blood away from
the heart to different parts of the
body.
617.For the start of respiration, a living cell
requires?
(a) Glucose
(b) Glucose + O2
(c) O2
(d) Glucose + ATP
618.Name the term which means ‘taking in of
air rich in oxygen into the body’.
(a) Exhalation
(b) Inhalation
(c) Breathing
(d) Respiration
619. Which of the following statements is true
about Trachea in a respiratory system?
(a) It functions as passages of air to each
alveolus
(b) It functions for sound production
(c) It Acts as passage of air to bronchi
(d) It Lowers the surface tension
620.. Which of the following structures is involved
in gaseous exchange in woody stem of a
plant?
(a) Stomata
(b) Guard cell
(c) Lenticel
(d) Epidermis
621.The cycle in which pyruvic acid is broken
down in presence of oxygen is known as?
(a) Glycolysis
(b) Krebs cycle
(c) Anaerobic respiration
(d) None of the above
622.Which of the following statements are true
about respiration?
A. Haemoglobin has greater affinity for
CO2 than O2.
B. The gaseous exchange takes place in the
alveoli.
C. During inhalation ribs move inward and
diaphragm is raised.
D. Haemoglobin has greater affinity for O2
than CO2.
(a) B and D
(b) A and C
(c) B and C
(d) A and B
623.. Breaking down of glucose in the presence of
oxygen produces ?
(a) Carbon dioxide
(b) Energy
(c) Water
(d) All of the above
624 During respiration exchange of gases takes
place in?
(a) Trachea and larynx
(b) Throat and larynx
(c) Alveoli and throat
(d) Alveoli of lungs
625.Opening of oesophagus is:
(a) Gullet
(b) Glottis
(c) Larynx
(d) Pharynx
626. Cud chewing animals are known as:
(a) Ruminants
(b) Cannibals
(c) Frugivore
(d) Sanguivores
627.Conversion of large fat droplets into smaller
droplets are
(a) Neutralisation
(b) Assimilation
(c) Emulsification
(d) Anabolism
628.Example of some organisms which derive
nutrition from plants or animals without
killing them
(a) Cuscuta
(b) Ticks
(c) Leeches
(d) All of the above
629. Choose the form in which most of the plants
absorb nitrogen from the atmosphere?
(a) Proteins
(b) Amino acids
(c) Atmospheric nitrogen
(d) Nitrates and nitrites
630. Assertion : All the plants possess
autotrophic mode of nutrition.
Reason : Due to the presence of green
coloured pigment chlorophyll in them.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
631.Assertion : Egestion in amoeba takes place
through a permanent membrane present in
them.
Reason : Cilia is absent in amoeba.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
632.Assertion : Ethanol is obtained during the
anaerobic process of respiration.
Reason : This is due to presence of oxygen
and it takes place in the mitochondria.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
633.Assertion : During the night the effect of
root pressure in transport of water is more
important.
Reason : Stomata is open during day,
transpiration takes place which help in
transport of water.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason a
634. monoxide is injurious to the health of the
individual.
Reason : Carbon monoxide has very strong
affinity for the blood.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
635.Assertion : In plants, water is transported
through phloem.
Reason : It is because sieve tubes are absent
in phloem.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
636.. Assertion : The thickest muscles are present
in left atrium.
Reason : Left atrium receives deoxygenated
blood from the lungs.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
637.Assertion : Failure of the kidneys leads to
death of the person and there is no way he
can survive.
Reason : Transplant of kidneys in humans
is not possible.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
638.Assertion : Aerobic animals are not truly
aerobic.
Reason : Anaerobically they produce lactic
acid.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
639. Assertion : Dark phase reactions take place
at night.
Reason : Dark phase is independent of light,
hence, called light independent phase.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
640.Assertion : in the daytime, CO2 generated
during respiration is used up for
photosynthesis.
Reason : There is no CO2 release during
day.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
640. Assertion : Amoeba is not an omnivore
organism.
Reason : Lion is a carnivore organism.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
641. Assertion : Liver is known as the largest
gland of the body.
Reason : It secretes salivary amylase.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
642. Assertion : Respiration is not a biochemical
process opposite to photosynthesis.
Reason : Energy is released during
respiration.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
643.Assertion : In woody plants, gaseous
exchange occurs through lenticels.
Reason : Lenticels are specialised cells
found along with stomata on the stem of
woody plants.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
644.Assertion : Haemoglobin is not the
respiratory pigment in human beings.
Reason : It transports oxygen in the human
body.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
645.Assertion : Interauricular septum separates
left from right atrium.
Reason : Interventricular septum separates
left from right ventricle.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
646. Assertion : Excretion is the biological
process by which harmful wastes are
removed from an organism’s body.
Reason : The mode of excretion is
completely same in both unicellular and
multicellular organisms.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
647. Assertion : The main organ of human
excretory system is kidney.
Reason : Kidneys perform the function of
adding water and nitrogenous wastes from
the body.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
648. Assertion : Artificial kidney is a device
used to remove nitrogenous waste products
from the blood through dialysis.
Reason : Reabsorption does not occur in
artificial kidney.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
649 Assertion : Plants excrete various waste
products during their life processes.
Reason : They produce urea just like
humans.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
sudden activity?
(a) The pyruvate gets converted into
lactic acid to release of energy.
(b) The pyruvate gets converted into
carbon dioxide to release of energy.
(c) The pyruvate gets converted into
ethanol to release of energy.
(d) The pyruvate gets converted into
glucose to release of energy.
521. Pyruvate is a-
(a) three-carbon molecule
(b) four-carbon molecule
(c) five-carbon molecule
(d) six-carbon molecule
522. During the process of respiration in plants,
the direction of diffusion of oxygen and
carbon dioxide depends upon
(a) the environmental conditions
(b) the requirements of the plant
(c) both (a) and (b)
(d) none of these
523.The rate of breathing in aquatic organisms
is much faster than that seen in terrestrial
organisms, because-
(a) the amount of dissolved oxygen in
water is fairly high as compared to
the amount of oxygen in the air.
(b) the amount of dissolved oxygen in
water is fairly low as compared to the
amount of oxygen in the air.
(c) aquatic organisms need more oxygen
to breath.
(d) aquatic organisms do not have proper
organs for breathing.
524........... helps in preventing the collapse of
the air passage during breathing.
(a) Nostrils
(b) Mucus
(c) Lungs
(d) Rings of cartilage
525.The respiratory route of air in the
respiratory tract of human is:
(a) nostrils " pharynx " larynx "
trachea " alveoli.
(b) alveoli " pharynx " larynx " trachea
" nostrils.
(c) alveoli " larynx " trachea " pharynx
" nostrils.
(d) nostrils " trachea " pharynx "
larynx " alveoli.
526.. Normal range of haemoglobin content in
human beings is-
(a) For men, 12.0 to 15.5 grams per
decilitre. For women, 13.5 to 17.5
grams per decilitre.
(b) For men, 13.5 to 17.5 grams per
decilitre. For women, 12.0 to 15.5
grams per decilitre.
(c) For men, 10.5 to 17.5 grams per
decilitre. For women, 10.0 to 15.5
grams per decilitre.
(d) For men, 15.5 to 20.5 grams per
decilitre. For women, 12.0 to 15.5
grams per decilitr
527. What type of tissue is blood?
(a) muscle tissue
(b) nervous tissue
(c) fluid connective tissue
(d) epithelial tissue
528.. Blood consists of a fluid medium called
.......... in which the cells are suspended.
(a) Plasma
(b) RBCs
(c) Platelets
(d) WBCs
529.Oxygen is carried by the .......... cells.
(a) white blood cells
(b) red blood cells
(c) muscle cells
(d) nerve cells
530.The function of valves present in auricles
and ventricles is-
(a) It ensures that the blood flows only in
one direction.
(b) Helps in coagulation of blood
(c) Destroy the worn out blood cells
(d) Measure pressure of body fluids
531.The vein which brings clean blood from the
lungs into the heart is known as:
(a) Pulmonary vein
(b) Hepatic vein
(c) Superior vena cava
(d) Pulmonary artery
532. In higher vertebrates, systemic circulation
takes place between .......... .
(a) body parts and lungs
(b) body parts and heart
(c) heart and body parts
(d) lungs and heart
533.The upper two chambers of the heart are
called .......... .
(a) aorta
(b) auricles
(c) septa
(d) ventricles
534.Contraction of auricles of the heart is called
.......... .
(a) Systole
(b) Diastole
(c) Heart beat
(d) Hypertension
535.Which instrument is used to measure blood
pressure?
(a) Thermometer
(b) Electrocardiograph
(c) Pulse recorder
(d) Sphygmomanometer
536. Amphibians or many reptiles have ..........
hearts.
(a) two-chambered
(b) three-chambered
(c) four-chambered
(d) five-chambered
537. Cells formed in the bone marrow are ..........
(a) Erythrocytes only
(b) Leucocyte only
(c) Both erythrocytes and leucocyte
(d) Platelets and blood cells
538.The normal rate of heart beat in an adult
is .......... per minute.
(a) 67 times
(b) 72 times
(c) 90 times
(d) 100 times
539.Arteries are the vessels which carry blood
away from the
(a) Various body parts to the heart
(b) Heart to various organs of the body
(c) Heart to lungs
(d) Lungs to heart
540.. Which part of blood helps in clotting?
(a) WBCs
(b) RBCs
(c) Platelets
(d) Plasma
541.Arteries and veins are connected by a
network of extremely narrow tubes called:
(a) Sieve tubes
(b) Capillaries
(c) Vena cava
(d) Valves
542.The pulmonary artery arises from the
.......... .
(a) right auricle
(b) left auricle
(c) left ventricle
(d) right ventricle
543.. Heart is surrounded and protected by
.......... .
(a) Retro peritoneum
(b) Muscles
(c) Pericardium
(d) Lungs
544.The valve that prevents backward flow
of blood from the left auricle to the right
auricle is the .......... .
(a) mitral valve
(b) auriculoventricular valve
(c) tricuspid valve
(d) semilunar valve
545.The chief function of lymph in a mammalian
body is to .......... .
(a) destroy the worn out blood cells
(b) produce leucocyte
(c) destroy pathogens
(d) produce a hormone
546.The number of chambers in a human heart
is .......... .
(a) 3
(b) 2
(c) 4
(d) 5
547. The colour of blood plasma is:
(a) Red
(b) Pale yellow
(c) Yellowish green
(d) Pink
548.The only reptile having 4 chambered heart
is:
(a) Snake
(b) Turtle
(c) Lizard
(d) Crocodile
549.What is normal blood pressure in humans?
(a) 120/80 mm of Hg
(b) 130/60 mm of Hg
(c) 140/70 mm of Hg
(d) 140/ 90 mm of Hg
550. Thrombocytes is another name for
(a) Red corpuscles
(b) Platelets
(c) Plasma
(d) White blood corpuscles
551. Vitamin .......... helps in blood clotting.
(a) Vitamin A2
(b) Vitamin B
(c) Vitamin E4
(d) Vitamin K
552.The richest natural source of minerals for
plants is .......... .
(a) chemical fertilizers
(b) soil
(c) air
(d) water
553 Chlorophyll-containing organs of plant are-
(a) Stem
(b) Roots
(c) Leaves
(d) Flowers
554 The .......... moves water and minera
obtained from the soil.
(a) phloem
(b) xylem
(c) parenchyma
(d) collenchyma
555.The water which is lost through the stomata
is replaced by
(a) water from the xylem vessels in the
leaf
(b) water from the phloem vessels in the
leaf
(c) water from the veins in the leaf
(d) none of the above
556 The effect of root pressure in transport of
water is more important at
(a) day time
(b) night time
(c) both (a) and (b)
(d) none of these
557.Transpiration helps :
(a) in the absorption
(b) in the upward movement of water
minerals dissolved in it from roots to
the leaves
(c) in temperature regulation
(d) All of the above
558. Which process is shown by the following
picture?
(a) Movement of food during
photosynthesis in a tree
(b) Movement of water during
transpiration in a tree
(c) Movement of minerals during in a
tree
(d) Movement of carbon dioxide during in
a tree
559. Trans location is the process in which
plants deliver:
(a) minerals from leaves to other parts of
the plant
(b) plant growth hormones from leaves to
other parts of the plant
(c) water and organic substance from
leaves to other parts of the plant
(d) all of the above
560.The trans location of food and other
substances takes place in the sieve tubes
with the help of adjacent companion cells
in :
(a) upward directions
(b) downward directions
(c) both upward and downward directions
(d) none of these
561.Which of the following substance is obtained
from the soil by the plants:
(a) oxygen
(b) carbon dioxide
(c) nitrogen
(d) all of the above
562 When the materials like sucrose are
transferred to phloem tissue, the osmotic
pressure of the tissue .......... leading to
.......... of water into/from it.
(a) Increases, entry
(b) Decreases, entry
(c) Increases, exit
(d) Decreases, exit
563.Plants use the energy stored in ATP to
accomplish the process of transportation of
(a) Water and minerals
(b) Carbon dioxide
(c) Oxygen
(d) Food
564........ helps in trans location of food in
plants.
(a) Xylem
(b) Phloem
(c) Palisade cells
(d) Root hairs
565.The process of movement of solvent particles
from region of less solute concentration to
region of high solute concentration through
semi permeable membrane is called ...........
(a) Diffusion
(b) Osmosis
(c) Transpiration
(d) Translocation
566.The biological process involved in the
removal of these harmful metabolic wastes
from the body is called
(a) Photosynthesis
(b) Respiration
(c) Excretion
(d) Translocation
567.The excretory system of human beings
includes a pair of kidneys, a pair of ureters,
a urinary bladder and a urethra
(a) a pair of kidneys, a pair of ureters
(b) a urinary bladder and a urethra
(c) a pair of kidneys, a urinary bladder
and a urethra
(d) a pair of kidneys, a pair of ureters, a
urinary bladder and a urethra
568.The purpose of making urine is to:
(a) filter out waste products from the
blood
(b) filter out minerals from the blood
(c) filter out water from the blood
(d) none of these
569.Choose the correct pathway of urine in our
body-
(a) Kidney " ureter " urethra " urinary
bladder
(b) Kidney " Ureter " urinary bladder
" urethra
(c) Kidney " urinary bladder " urethra
" Ureter
(d) Kidney " urethra " Ureter " urinary
bladder
570.Which of the main toxic waste that kidney
filters from blood?
(a) Ammonia
(b) Uric acid
(c) Urea
(d) Water
571.The functional unit of kidney is:
(a) Nephron
(b) Neuron
(c) Glomerulus
(d) Bowman’s Capsule
572. Just as CO2 is removed from the blood in
the lungs, nitrogenous waste such as urea
or uric acid are removed from blood in the -
(a) Kidney
(b) Urinary bladder
(c) Urethra
(d) Ureters
573. The given diagram is the structure of a/an-
(a) Alimentary canal
(b) Respiratory tract
(c) Nephron
(d) Small intestine
574.. An artificial kidney is a device to remove
nitrogenous waste products from the blood
through-
(a) Diaphragm
(b) Dialysis
(c) ECG
(d) Electrolysis
575.Normally, in a healthy adult, the initial
filtrate in the kidneys is about :
(a) 100 L/day
(b) 150 L/day
(c) 180 L/day
(d) 200 L/day
576 Sweating is meant for:
(a) Regulation of body temperature
(b) Removal of excess salt
(c) Removal of excess water
(d) All of the above
577.Oxygen is a waste product generated during
.......... in plants.
(a) Respiration
(b) Photosynthesis
(c) Both respiration and photosynthesis
(d) None of the above
578.Many-plant waste products are stored in:
(a) Chloroplast
(b) Mitochondria
(c) Cellular vacuoles
(d) Cytoplasm
579.Which one of the following is the final
product of photosynthesis?
(a) Mineral salt
(b) Starch
(c) Fat
(d) Protein
580. What is the mode of nutrition in fungi?
(a) Parasitic
(b) Autotrophic
(c) Heterotrophic
(d) Saprophytic
581.How many pairs of salivary glands are
found in humans?
(a) Four
(b) Two
(c) Three
(d) Six
582.Proteins A Peptones
Identify the enzyme A involved in the
above reaction.
(a) Lipase
(b) Pepsin
(c) Bile juice
(d) Salivary amylase
583.In photosynthesis, which substances are
used up, which are produced and which are
necessary, but remain unchanged after the
reaction?
Used up Produced Remain
Unchanged
(a) Water Oxygen Chlorophyll
(b) Oxygen Starch Cellulose
(c) Carbon
dioxide
Water Oxygen
(d) Chlorophyll Carbon
dioxide
Water
584.The diagram shows the arrangement of
cells inside the leaf of a green plant. (No
cell contents are shown).
Which of the following cells normally
contain chloroplasts?
(a) 2 and 4
(b) 2 and 3
(c) 1 and 2
(d) 1 and 4
585.Choose the forms in which most plants
absorb nitrogen:
1. Atmospheric nitrogen
2. Proteins
3. Nitrates and nitrites
4. Urea
Choose the correct option.
(a) 1 and 4
(b) 3 and 4
(c) 1 and 2
(d) 2 and 3
586. When a person eats some egg white,
proteins and water enter the stomach.
Which substances are found leaving the
stomach and leaving the small intestine?
Leaving the
Stomach
Leaving the
Small Intestine
(a) Protein, amino
acids and water
Water
(b) Amino acids and
water
Amino acids and
water
(c) Fatty acids,
glycerol and
water
Fatty acids,
glycerol and
water
(d) Protein and
water
Fatty acids and
glycerol
587.Only two of the following Statements
accurately describe what happens in the
mouth.
1. Amylase breaks down large starch
molecules into smaller maltose molecules.
2. Chewing increases the surface area of
food for digestion.
3. Saliva emulsifies fats into smaller
droplets.
4. Teeth breakup large insoluble molecules
into smaller soluble molecules.
Which statements are correct?
(a) 1 and 2
(b) 2 and 3
(c) 3 and 4
(d) 1 and 4
588.The process of conversion of glucose into
pyruvic acid occurs in
(a) chloroplast
(b) mitochondria
(c) outside the cell
(d) cytoplasm
589. During vigorous physical exercise, lactic
acid is formed from glucose inside the
muscle cells because
(a) there is excess of carbon dioxide
(b) there is lack of water
(c) there is lack of oxygen
(d) none of the above
590.The diagram shows part of the human gas
exchange system.
Here, W X, ,Y and Z are?
Bronchus Bronchiole Larynx Trachea
(a) W X Z Y
(b) X Z Y W
(c) Y W X Z
(d) Z Y W X
591.. An experiment is set up as shown. Flasks
1 and 2 contain lime water. Air is pumped
through the flasks.
What is the appearance of lime water in
flasks 1 and 2 after a period of ten minutes?
Flask 1 Flask 2
(a) Clear Clear
(b) Clear White/Cloudy
(c) White/Cloudy Clear
(d) White/Cloudy White/Cloudy
592 Which of the following is the correct route
for blood flow in a human?
(a) Right atrium " Right ventricle "
Lungs " Left atrium " Left ventricle
(b) Right atrium " Right ventricle "
Left ventricle " Left atrium " Lungs
(c) Left atrium " Left ventricle " Right
ventricle " Right atrium " Lungs
(d) Left atrium " Left ventricle " Lun
gs Right ventricle " Right atrium
593.The table shows the characteristics of blood
in one blood vessel of the body.
Oxygen
concentration
Carbon dioxide
concentration
Pressure
High Low High
Which blood vessel contains blood with
these characteristics?
(a) Vena cava
(b) Pulmonary vein
(c) Aorta
(d) Pulmonary artery
594.The waste product from skin is known as?
(a) Salts
(b) Urine
(c) Sweat
(d) Urea
595.What happens if a person has one kidney
removed?
(a) They will accumulate excess urea
(b) They will die
(c) They will continue as normal
(d) They will stop making urine
595.A terrestrial animal must be able to ..........?
(a) Excrete large amount of water
(b) Actively pump salts through skin
(c) Excrete large amount of salts in urine
(d) Conserve water
596. Conversion of excess of amino acids into
urea is done in?
(a) Lungs
(b) Large intestine
(c) Liver
(d) Cloaca
598. The best long term solution for kidney
failure is?
(a) Dialysis
(b) Kidney transplant
(c) Surgery
(d) Both (a) and (b)
599. Flame cells are the excretory structures in
(a) Arthropods
(b) Platyhelminthes
(c) Annelids
(d) Crustaceans.
600.Main excretory organ of humans is?
(a) Lungs
(b) Skin
(c) Kidney
(d) Liver
601.The excretory system of human beings
includes?
(a) A pair of kidneys
(b) A pair of ureters
(c) A urinary bladder and a urethra
(d) All of the above
602.Which of the following harmful products is
not produced in the biochemical reactions
of the cell of living organisms?
(a) Urea
(b) Uric acid
(c) Ammonia
(d) Lymph
603.The blood vessel that begins and ends in
capillaries?
(a) Renal vein
(b) Renal artery
(c) Hepatic artery
(d) Hepatic portal vein
604. In our body which organ is responsible for
conversion of ammonia into urea?
(a) Kidney
(b) Lungs
(c) Heart
(d) Liver
605. What is the name of the blood vessels that
provide nutrition of the heart wall?
(a) Pulmonary arteries
(b) Pulmonary veins
(c) Coronary arteries
(d) Descending aorta
606.Which of the following is the correct
features of ‘lymph’?
(a) It is similar to the plasma of blood,
colourless and contain less protein.
(b) Similar to the WBC of blood,
colourless and contain more protein.
(c) Similar to the RBC of blood and red
in colour.
(d) It contains more fat
607. By which cell the process of opening and
closing of stomata is controlled?
(a) Epidermal Cell
(b) Guard Cell
(c) Accessory Cell
(d) Leaf Cell
608.Which organ is known as “Blood bank” ?
(a) Heart
(b) Liver
(c) Spleen
(d) Kidney
609.Which of the following is carried by lymph
which is digested and absorbed from
intestine?
(a) Fat
(b) Protein
(c) Minerals
(d) Carbohydrates
610.Tricuspid valve is present in ?
(a) Right atrium and right ventricle
(b) Left atria and left ventricle
(c) Wall of atrium
(d) Wall of ventricle
611.Which of the following helps in maximum
transport of oxygen?
(a) Red blood corpuscles
(b) Platelets
(c) Plasma
(d) White blood corpuscles
612.Four chambered heart is characteristics
feature of?
(a) Fishes
(b) Amphibians
(c) Reptiles
(d) Mammals
613.Where does the maximum exchange of
material between blood and surrounding
cells occur?
(a) Heart
(b) Capillaries
(c) Arteries
(d) Veins
614 Dead cells of phloem are
(a) Companion cells
(b) Phloem fibres
(c) Phloem parenchyma
(d) Sieve tubes
615.Largest heart is found in
(a) Elephant
(b) Giraffe
(c) Crocodile
(d) Lion
616.Choose the correct statement that describe
the arteries?
(a) They have thick elastic walls, blood
flows under high pressure, collect
blood from different organs and bring
it back to the heart.
(b) They have thin walls with valves
inside, blood flows under low pressure
and carry blood away from the heart
to various organs of the body.
(c) They have thick elastic walls, blood
flows under low pressure, carry blood
from the heart to various organs of
the body.
(d) They have thick elastic walls without
valves inside, blood flows under high
pressure and carry blood away from
the heart to different parts of the
body.
617.For the start of respiration, a living cell
requires?
(a) Glucose
(b) Glucose + O2
(c) O2
(d) Glucose + ATP
618.Name the term which means ‘taking in of
air rich in oxygen into the body’.
(a) Exhalation
(b) Inhalation
(c) Breathing
(d) Respiration
619. Which of the following statements is true
about Trachea in a respiratory system?
(a) It functions as passages of air to each
alveolus
(b) It functions for sound production
(c) It Acts as passage of air to bronchi
(d) It Lowers the surface tension
620.. Which of the following structures is involved
in gaseous exchange in woody stem of a
plant?
(a) Stomata
(b) Guard cell
(c) Lenticel
(d) Epidermis
621.The cycle in which pyruvic acid is broken
down in presence of oxygen is known as?
(a) Glycolysis
(b) Krebs cycle
(c) Anaerobic respiration
(d) None of the above
622.Which of the following statements are true
about respiration?
A. Haemoglobin has greater affinity for
CO2 than O2.
B. The gaseous exchange takes place in the
alveoli.
C. During inhalation ribs move inward and
diaphragm is raised.
D. Haemoglobin has greater affinity for O2
than CO2.
(a) B and D
(b) A and C
(c) B and C
(d) A and B
623.. Breaking down of glucose in the presence of
oxygen produces ?
(a) Carbon dioxide
(b) Energy
(c) Water
(d) All of the above
624 During respiration exchange of gases takes
place in?
(a) Trachea and larynx
(b) Throat and larynx
(c) Alveoli and throat
(d) Alveoli of lungs
625.Opening of oesophagus is:
(a) Gullet
(b) Glottis
(c) Larynx
(d) Pharynx
626. Cud chewing animals are known as:
(a) Ruminants
(b) Cannibals
(c) Frugivore
(d) Sanguivores
627.Conversion of large fat droplets into smaller
droplets are
(a) Neutralisation
(b) Assimilation
(c) Emulsification
(d) Anabolism
628.Example of some organisms which derive
nutrition from plants or animals without
killing them
(a) Cuscuta
(b) Ticks
(c) Leeches
(d) All of the above
629. Choose the form in which most of the plants
absorb nitrogen from the atmosphere?
(a) Proteins
(b) Amino acids
(c) Atmospheric nitrogen
(d) Nitrates and nitrites
630. Assertion : All the plants possess
autotrophic mode of nutrition.
Reason : Due to the presence of green
coloured pigment chlorophyll in them.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
631.Assertion : Egestion in amoeba takes place
through a permanent membrane present in
them.
Reason : Cilia is absent in amoeba.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
632.Assertion : Ethanol is obtained during the
anaerobic process of respiration.
Reason : This is due to presence of oxygen
and it takes place in the mitochondria.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
633.Assertion : During the night the effect of
root pressure in transport of water is more
important.
Reason : Stomata is open during day,
transpiration takes place which help in
transport of water.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason a
634. monoxide is injurious to the health of the
individual.
Reason : Carbon monoxide has very strong
affinity for the blood.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
635.Assertion : In plants, water is transported
through phloem.
Reason : It is because sieve tubes are absent
in phloem.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
636.. Assertion : The thickest muscles are present
in left atrium.
Reason : Left atrium receives deoxygenated
blood from the lungs.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
637.Assertion : Failure of the kidneys leads to
death of the person and there is no way he
can survive.
Reason : Transplant of kidneys in humans
is not possible.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
638.Assertion : Aerobic animals are not truly
aerobic.
Reason : Anaerobically they produce lactic
acid.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
639. Assertion : Dark phase reactions take place
at night.
Reason : Dark phase is independent of light,
hence, called light independent phase.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
640.Assertion : in the daytime, CO2 generated
during respiration is used up for
photosynthesis.
Reason : There is no CO2 release during
day.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
640. Assertion : Amoeba is not an omnivore
organism.
Reason : Lion is a carnivore organism.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
641. Assertion : Liver is known as the largest
gland of the body.
Reason : It secretes salivary amylase.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
642. Assertion : Respiration is not a biochemical
process opposite to photosynthesis.
Reason : Energy is released during
respiration.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
643.Assertion : In woody plants, gaseous
exchange occurs through lenticels.
Reason : Lenticels are specialised cells
found along with stomata on the stem of
woody plants.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
644.Assertion : Haemoglobin is not the
respiratory pigment in human beings.
Reason : It transports oxygen in the human
body.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
645.Assertion : Interauricular septum separates
left from right atrium.
Reason : Interventricular septum separates
left from right ventricle.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
646. Assertion : Excretion is the biological
process by which harmful wastes are
removed from an organism’s body.
Reason : The mode of excretion is
completely same in both unicellular and
multicellular organisms.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
647. Assertion : The main organ of human
excretory system is kidney.
Reason : Kidneys perform the function of
adding water and nitrogenous wastes from
the body.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
648. Assertion : Artificial kidney is a device
used to remove nitrogenous waste products
from the blood through dialysis.
Reason : Reabsorption does not occur in
artificial kidney.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
649 Assertion : Plants excrete various waste
products during their life processes.
Reason : They produce urea just like
humans.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
Digestion is a catabolic process in which
complex and large components of food are
broken down into their respective simpler
and smaller forms with the help of various
hydrolytic enzymes. In human beings, the
process of intake of essential nutrients in
the form of food takes place through an
entire system in human includes alimentary
canal and its associated digestive glands.
The alimentary canal is a muscular coiled
tubular structure about 9 m in length that
begins from mouth and ends whit anus.
The various organs of the human digestive
system in sequence are: Mouth, Oesophagus
(or Food pipe), Stomach, Small intestine
and Large intestine. The glands which
are associated with the human digestive
system and form a part of the human
digestive system are: Salivary glands, Liver
and Pancreas. The ducts of various glands
open into the alimentary canal and pour
the secretions of the digestive juices into
the alimentary canal.
650.In which of the following organ is digested?
(a) mouth
(b) stomach only
(c) large intestine
(d) stomach and small intestine
651..Which of the following is the final product
of digestion of protein?
(a) Glycerol
(b) Amino acids
(c) Glucose
(d) Nitric acid
652. What are peristaltic movements?
(a) Rhythmic contraction of canal
(b) Movement of heart
(c) Movement of ribs
(d) Movement of body parts
653.Which of the following enzyme is present
in Saliva?
(a) Amylase
(b) Pepsinogen
(c) Trypsin
(d) Lipase
654.Which chemical substance is responsible
for acidic medium of stomach?
(a) Bile juice
(b) HCl
(c) CH3COOH
(d) Lactic acid
They create by-products that art not only
useless for the cells of the body, but could
even be harmful. These waste by-products
are therefore needed to be removed from
the body and discarded outside by a
process called excretion. Again, if the basic
rules for body design in multi-cellular
organisms are followed, a specialised tissue
for excretion will be developed, which
means that the transportation system will
need to transport waste away from cells to
this excretory tissue.
655.The excretory materials are temporarily
stored in:
(a) Urethra
(b) Kidneys
(c) Ureters
(d) Urinary bladder
656.The main excretory by-product in human
beings is
(a) Creatine
(b) Urea
(c) Uric acid
(d) None of the above
657.The process of removal of nitrogenous waste materials from the body is called .......... .
(a) Nutrition
(b) Respiration
(c) Excretion
(d) Transportation
658. Which is the main excretory organ in
human beings?
(a) Intestine
(b) Kidneys
(c) Lungs
(d) Heart
659.Which is known as basic filtration unit in
the kidneys?
(a) Alveoli
(b) Nephron
(c) Stomata
(d) Guard cells
Direction For Questions
Arteries are the vessels which carry blood
away from the heart to various organs of
the body. Since the blood emerges from
the heart under high pressure, the arteries
have thick, elastic walls. Veins collect the
blood from different organs and bring it
back to the heart. They do not need thick
walls because the blood is no longer under
pressure, instead they have valves that
ensure that the blood flows only in one
direction.
On reaching an organ or tissue, the artery
divides into smaller and smaller vessels
to bring the blood in contact with all the
individual cells. The smallest vessels have
walls which are one-cell thick and are called
capillaries. Exchange of material between
the blood and surrounding cells takes place
across this thin wall. The capillaries then
join together to form veins that convey the
blood away from the organ or tissue.
660.What is importance of thin walls of blood
capillaries?
(a) Thin walls of blood capillaries provide
them protection.
(b) Exchange of materials between the
blood and surrounding cells take
place across the thin walls of blood
capillaries.
(c) Thin walls of blood capillaries help on
smooth flow of blood.
(d) All of the above.
661.Write two differences between arteries and
veins.
(a) Arteries are blood vessels while veins
are not.
(b) Arteries have thick walls while veins
have thin walls.
(c) Arteries have valves while do not have
valves.
(d) All of the above.
662.What is the function of valves in veins?
(a) Valves ensure the unidirectional flow
of blood.
(b) Valves increase the oxygen carrying
capacity of the blood.
(c) Valves protect the veins from outer
shocks.
(d) Valves withstand the high pressure of
blood in veins.
663.Which blood vessels have high blood
pressure and what they have to withstand
this high pressure?
(a) Both arteries and veins have same
pressure of blood and they are thich
walled vessels.
(b) Arteries have high blood pressure and
they have elastic and thick walls to
withstand this high pressure.
(c) Veins have high blood pressure and
they have to valves to withstand this
high pressure.
(d) None of the above.
664.What is the function of arteries?
(a) Arteries have high blood pressure.
(b) Arteries are present in the body of
human beings.
(c) Arteries are thicker than veins.
(d) Arteries are the blood vessels which
carry blood away from the heart to
various organs of the body.
Direction For Questions (217-221)
This transport of soluble products of
photosynthesis is called translocation and
it occurs in the part of the vascular tissue
known as phloem. Besides the products
of photo-synthesis, the phloem transports
amino acids and other substances. These
substances are especially delivered to the
storage organs of roots, fruits and seeds
and to growing organs. The translocation
of food and other substances takes place in
the sieve tubes with the help of adjacent
companion cells both in upward and
downward directions. Unlike transport in
xylem which can be largely explained by
simple physical forces, the translocation
in phloem is achieved by utilising energy,
Material like sucrose is transferred into
phloem tissue using energy from ATP. This
increases the osmotic pressure of the tissue
causing water to move into it. This pressure
moves the material in the phloem to tissues
which have less pressure. This allows the
phloem to move material according to the
plant’s needs. For example, in the spring,
sugar stored in root or stem tissue would
be transported to the buds which need
energy to grow.
665.The transportation of materials into
phloem requires:
(a) Amino acids
(b) Food
(c) Water
(d) Energy
666.The translocation of food in plants takes
place in:
(a) Upward direction only
(b) Downwards direction only
(c) Leaves only
(d) Both in upward and downward
directions
667.The components which help in the
translocation process in plants are:
(a) Amino acid
(b) Sieve tubes and companion cells
(c) Fruit
(d) Seeds
66i.The phenomenon of transportation of food
in plants in its dissolved form is called:
(a) Translocation
(b) Excretion
(c) Transpiration
(d) Nutrition
669.Which of the following vascular tissue is
responsible for the transportation of soluble
products of photosynthesis?
(a) Xylem
(b) Phloem
(c) Both Phloem and Xylem
(d) None of the above
Direction For Questions (222-226)
The small intestine is the site of the complete
digestion of carbohydrates, proteins and
fats. It receives the secretions of the liver
and pancreas for this purpose. The food
coming from the stomach is acidic and
has to be made alkaline for the pancreatic
enzymes to act. Bile juice from the liver
accomplishes this in addition to acting on
fats. Fats are present in the intestine in
the form of large globules which makes it
difficult for enzymes to act on them. Bile
salts break them down into smaller globules
increasing the efficiency of enzyme action.
The pancreas secretes pancreatic juice
which contains enzymes like trypsin for
digesting proteins and lipase for breaking
down emulsified fats. The walls of the small
intestine contain glands which secrete
intestinal juice. The enzymes present in it
finally convert the proteins to amino acids,
complex carbohydrates into glucose and
fats into fatty acids and glycerol.
679.The food coming from the stomach is made
alkaline by:
(a) Bile juice
(b) Pancreatic juice
(c) Gastric juice
(d) Intestinal juice
671. In small intestine proteins are decomposed
into:
(a) fatty acids only
(b) glucose
(c) amino acids
(d) fatty acids and glycerol
672.Which enzymes are present in the pancreatic
juice for digestion of proteins and fats?
(a) Amylase and pepsin
(b) Amylase and lipase
(c) Pepsin and trypsin
(d) Lipase and trypsin
673. Which two organs release their secretions
into small intestine for digestion of food?
(a) Liver and stomach
(b) Oesophagus and stomach
(c) Pancreas and stomach
(d) Liver and pancreas
674. The complete digestion of food takes place
in:
(a) small intestine
(b) stomach
(c) mouth
(d) large intestine
Direction For Questions (227-231)
Nitrogenous materials formed due to
metabolic activities are need to be
removed. The biological process involved
in the removal of these harmful metabolic
wastes from the body is called excretion.
Different organisms use varied strategies to
do this. Many unicellular organisms remove
these wastes by simple diffusion from the
body surface into the surrounding water
while complex multi-cellular organisms
use specialised organs to perform the same
function.
675.Study the picture given above and choose
the correct combination of plots provided
in the following table.X Process usedFunction
(a) Dialysing
pump
Filtration To draw
blood from
the body and
send it to
dialyser
(b) Dialysate Osmosis To add fluid
to the blood
(c) Blood
thinner
Clotting To remove
the clots
from the
blood
(d) Dialyser Diffusion To remove
the excess
wastes and
fluid from
the blood
676.Which of the following statement(s) is (are)
true about excretion in human beings?
I. Urine is stored in the urethra until the
urge of passing it out.
II. Each kidney has large numbers of
filtration units called nephrons.
III.The bladder is muscular, so it is under
nervous control.
IV.Kidneys are the primary excretory
organs.
(a) I and II only
(b) I and III only
(c) II, III and IV only
(d) I and IV only
677 Study the table below and select the row
that has the incorrect information.Excretory
OrganSubstances Excreted
(a) Oil glands Sebum
(b) Skin Sweat
(c) Lungs Urea
(d) Kidneys Nitrogenous wastes
678. The given figure represents the structure of
a nephron.
Which section of the nephron is responsible
for concentrating the solute in the filtrate?
(a) P
(b) Q
(c) R
(d) S
679.The excretory system of human beings
include
(a) a kidney, a ureter, a urinary bladder
and a urethra
(b) a pair of kidneys, a pair of ureters, a
pair of urinary bladders and a urethra
(c) a pair of kidneys, a pair of urinary
bladders, a ureter, and a urethra
(d) a pair of kidneys, a pair of ureters, a
urinary bladder and a urethra
Plants have low energy needs and can use
relatively slow transport systems. The
distances over which transport systems
have to operate, however, can be very large
in plants such as very tall trees. Plant
transport systems move energy stores
from leaves and raw materials from roots.
These two pathways are constructed as
independently organised conducting tubes.
680.. Force of cohesion develops due to
(a) attraction between similar molecules
(b) attraction between different molecules
(c) attraction between xylem and phloem
(d) attraction between xylem and water
681.. Given graph shows the rates of water
absorption and transpiration of a plant
during a 24-hour period.
The difference between the rates of
transpiration and water absorption between
00:00 and 06:00 hours is due to:
(a) The rate of absorption fell behind the
rate of transpiration during the day,
but exceeded it at night.
(b) Rate of absorption is always higher
than rate of transpiration.
(c) Rate of absorption is always equal to
rate of transpiration.
(d) The rate of absorption is higher than
the rate of transpiration during the
day, but decreases at night.
682.The given figure represents the movement of water and minerals in xylem and movement
of food in phloem..Choose the correct combination of plots provided in the following table:X Y Z
(a) Major
conducting
cells in xylem
Denucleated Flow is
bidirectional
(b) Major
conducting
cells in phloem
Nucleated Flow is
unidirectional
(c) Major
conducting
cells in xylem
and phloem
Denucleated Flow is
unidirectional
(d) Cells of xylem
but function is
not defined
Nucleated Flow is
bidirectional
683.Which of the following statement(s) is (are)
true about transport in plants?
I. Beside water, xylem also transports
amino acids and other substances.
II. The translocation in phloem is achieved
by utilising energy.
III.Transpiration helps in the absorption.
IV.This transport of soluble products of
photosynthesis occurs in phloem.
(a) I and II only
(b) II, III and IV only
(c) I, II and III only
(d) I, III and IV only
684.Study the table below and select the row
that has the incorrect information.
Cell Tissue
(a) Vessels and tracheid Xylem
(b) Sieve tubes cells Phloem
(c) Sieve tube cells and tracheid Xylem
(d) Companion cell Phloem
Direction For Questions (237-241)
The food material taken in during the
process of nutrition is used in cells to provide
energy for various life processes. Diverse
organisms do this in different ways - some
use oxygen to break-down the food material
completely, some use other pathways that
do not involve oxygen. In all cases, the first
step is the break-down of food material and
it takes place in the cytoplasm. Further,
the product of breakdown food may be
converted into ethanol and carbon dioxide.
Breakdown of food product using oxygen
takes place in the mitochondria. Sometime
food product is converted into lactic acid
which is also a three-carbon molecule.
685.Athletes suffers from muscle cramps due to
(a) conversion of pyruvate to ethanol
(b) conversion of pyruvate to glucose
(c) non-conversion of glucose to pyruvate
(d) conversion of pyruvate to lactic acid
686. The given graph indicates the effect
of exercise intensity on carbohydrate
consumption..At high intensity of exercise
(a) the anaerobic consumption of sugars
increases
(b) the aerobic consumption of sugars
increases
(c) the anaerobic consumption of sugars
decreases
(d) no consumption of sugars takes place
687.Study the graph below that represents the
blood test reports of an athlete just before
and after a race..Choose the correctcombination of plots provided in the following table.Section of race Concentration of lactic acidType of respiration
(a) A-B (sprint
start)
Changing
high to low
Changing
from
anaerobic
to aerobic
(b) B-C
(maintaining
speed)
High to low Anaerobic
(c) C-D (sprint
finish)
High Aerobic
(d) D-E (just after
sprint finishing)
Low Aerobic
688.Which of the following statement(s) is (are)
true about energy released during cellular
respiration?
I. It is used immediately to synthesise
ADP.
II. It is used to fuel all other activities in
the cell.
III.ADP is the energy currency for most
cellular processes.
IV.An ADP molecule is formed from ATP
and inorganic phosphate.
(a) I and II only
(b) II only
(c) I, II and III only
(d) I, III and IV only
689.Study the table below and select the row
that has the correct information.
Break
down of
pyruvate
in
Take place in End
products
(a) Absence
of oxygen
Yeast Lactic
acid +
Energy
(b) Lack of
oxygen
Muscle cells Ethanol
+ CO2 +
Energy
(c) Presence
of oxygen
Mitochondria CO2 2 + + H O
Energy
(d) Presence
of oxygen
Mitochondria Ethanol
+ CO2 +
Energy
Direction For Questions (242-246)
Carbon and energy requirements of the
autotrophic organism are fulfilled by
photosynthesis. It is the process by which
autotrophs take in substances from the
outside and convert them into stored
forms of energy. This material is taken
in the form of carbon dioxide and water
which is converted into carbohydrates in
the presence of sunlight and chlorophyll.
Carbohydrates are utilised for providing
energy to the plant. The carbohydrates
which are not used immediately are stored
in the form of starch, which serves as the
internal energy reserve to be used as and
when required by the plant. A somewhat
similar situation is seen in us where some of
the energy derived from the food we eat is
stored in our body in the form of glycogen.
That means the complex substances have
to be broken down into simpler ones before
they can be used for the upkeep and growth
of the body. To achieve this, organisms use
biocatalysis.
690.Heterotrophs depend for energy on
(a) autotrophs
(b) producers
(c) herbivores
(d) both (a) and (b)
691. The picture given below represents how
autotrophs take in substances from the
outside and convert them into stored forms
of energy.
The correct equation for the given process
is
(a) 6 6 CO2 2 + + H O$C H6 12 6 O O6 2
(b) 6 2 O H + + 6 6 2 6 O C $ H O12 6 2 CO
(c) C H6 12 6 O H + + 6 6 2 2 O C $ O O6 2
(d) 6 6 CO2 2 + + O C $ 6 1 H O2 6 6H O2
692. Study the picture below that represents the
mode of action of a biocatalyst.
Choose the correct combination of plots
provided in the following table.
Biocatalyst
also termed
as
Biocatalyst
found in
human saliva
Biocatalyst
produced in
human stomach
(a) Enzymes Amylase Pepsin
(b) Hormones Amylase Trypsin
(c) Enzymes Trypsin Pepsin
(d) Energy Pepsin Amylase
693.Which of the following statement (s) is
(are) true?
I. Carbon and energy requirements of the
autotrophic organism are fulfilled by
photosynthesis.
II. Carbohydrates are utilised for providing
energy to the plant.
III.Chlorophyll is essential for photosynthesis.
IV.Autotrophs survival depends directly or
indirectly on heterotrophs.
(a) I and II only
(b) II and III only
(c) I, II and III only
(d) I, III and IV only
694. Study the table below and select the row
Which of the following statement(s) is (are)
true about stomata?
I. These are typically found in leaves only.
II. Guard cells are responsible for regulating
the size of the stomatal opening.
III.These control the exchange of gases not
water vapours.
IV.These get closed at night to prevent
water loss in plants.
(a) I and II only
(b) II and IV only
(c) I, II and III only
(d) I, III and IV only
695 Study the table below and select the row
that has the correct information.
Epidermal cells Guard cell
(a) Bean-shaped in
surface view
Irregular in
shape
(b) Can manufacture
food by
photosynthesis
Can’t
manufacture
food by
photosynthesis
(c) Contain
chloroplast
Doesn’t contain
chloroplast
(d) Protects all parts
of the plant
Control
stomatal
opening
696.A plant is kept in the dark for two days. A
leaf is used in an experiment to investigate
the effect of two factors on photosynthesis
as shown in the diagram.
What are the colours of C and D, when
the leaf is tested for starch, using iodine
solution?
C D
(a) Brown Blue/black
(b) Blue/black Blue/black
(c) Brown Brown
(d) Blue/black Brown
697.. Various maintenance processes are needed
to:
(a) Survival
(b) Prevent damage and break down
(c) Routine process
(d) Release energy
698.All the sources of energy need to be broken
down in the body and converted into:
(a) Uniform energy
(b) Molecular energy
(c) Chemical reactions
(d) Digestive process
699.The reason for single cell diffusion
inefficiency in multicellular organism is
(a) Cell diffusion is a complex process
(b) Big size and complex body designs
(c) Cell diffusion requires lots of time
(d) Cell diffusion is rather a simple
process to be carried out in multi cell
organism
700.In multi-cellular organisms, various body
parts have specialized in the functions they
perform with the help of:
(a) Specialized cells
(b) Multiple organs
(c) Multiple structure
(d) Specialized tissues
701. Choose the incorrect statement:
(a) We don’t need energy while not doing
any activity
(b) We release energy and feel tired while
doing various activities
(c) Energy is needed to maintain the
state of body
(d) Our body need to synthesize protein
to develop
702 . The heterotrophs survival depends directly
or indirectly on:
(a) Surroundings
(b) Ecology and surrounding
(c) Autotrophs
(c) Molecular structure
703.The process by which autotrophs take in
substances from the outside and convert
them into stored forms of energy is known
as
(a) Photosynthesis
(b) Respiration
(c) Molecular breakup
(d) Cell diffusion
704 Human body stores energy in form of:
(a) Glucose
(b) Insulin
(c) glycogen
(d) Fructose
705. The green organelle on surface of leaves
containing chlorophyll are knows as
(a) Xylem
(b) Epidermis
(c) Chloroplasts
(d) Vascular bundle
706.The purpose of closing the pores by the
plants when it doesn’t need photosynthesis
is
(a) To save the water
(b) To save energy
(c) To save food
(d) None of the above
707. Most of the plant’s nitrogen, phosphorus,
iron and magnesium are taken up from the
(a) Aquatic sources
(b) Soil
(c) Mountains
(d) Sea water
708. Organism who break down the food outside
their body are
(a) Fungi
(b) Virus
(c) Tape worm
(d) None of the above
709. The broken down food into simpler form in
amoeba is diffused into
(a) Cytoplasm
(b) Ribosome
(c) DNA
(d) Mesosome
710.“Water” like fluid in our mouth is secreted
by
(a) Pancreas
(b) Thyroid
(c) Pituitary
(d) Salivary gland
711. Hydrochloric acid facilitates the action of
.......... .
(a) keratin
(b) collagen
(c) elastin
(d) pepsin
712 The .......... delivers the digestive juice to
the small intestine through small tubes
called ducts.
(a) Stomach
(b) Pancreas
(c) Large intestine
(d) Anus
713. The inner lining of the .......... has numerous
finger-like projections called villi which
increase the surface area for absorption.
(a) small intestine
(b) large intestine
(c) stomach
(d) pancreas
714.This process of break-down of glucose, a
six-carbon molecule, into a three-carbon
molecule pyruvate, takes place in
(a) Cytoplasm
(b) Mitochondria
(c) Golgi bodies
(d) Endoplasmic reticulum
715. Pyruvate is a-
(a) three-carbon molecule
(b) four-carbon molecule
(c) five-carbon molecule
(d) six-carbon molecule
716.The respiratory route of air in the
respiratory tract of human is:
(a) nostrils " pharynx " larynx "
trachea " alveoli.
(b) alveoli " pharynx " larynx " trachea
" nostrils.
(c) alveoli " larynx " trachea " pharynx
" nostrils.
(d) nostrils " trachea " pharynx "
larynx " alveoli.
717. Blood consists of a fluid medium called
.......... in which the cells are suspended.
(a) Plasma
(b) RBCs
(c) Platelets
(d) WBCs
718.In higher vertebrates, systemic circulation
takes place between .......... .
(a) body parts and lungs
(b) body parts and heart
(c) heart and body parts
(d) lungs and heart
719.Which instrument is used to measure blood
pressure?
(a) Thermometer
(b) Electrocardiograph
(c) Pulse recorder
(d) Sphygmomanometer
720.Arteries are the vessels which carry blood
away from the
(a) Various body parts to the heart
(b) Heart to various organs of the body
(c) Heart to lungs
(d) Lungs to heart
721.Heart is surrounded and protected by
.......... .
(a) Retro peritoneum
(b) Muscles
(c) Pericardium
(d) Lungs
722.The colour of blood plasma is:
(a) Red
(b) Pale yellow
(c) Yellowish green
(d) Pink
723 Vitamin .......... helps in blood clotting.
(a) Vitamin A2
(b) Vitamin B
(c) Vitamin E4
(d) Vitamin K
724.. The water which is lost through the stomata
is replaced by
(a) water from the xylem vessels in the
leaf
(b) water from the phloem vessels in the
leaf
(c) water from the veins in the leaf
(d) none of the above
725 Trans location is the process in which
plants deliver:
(a) minerals from leaves to other parts of
the plant
(b) plant growth hormones from leaves to
other parts of the plant
(c) water and organic substance from
leaves to other parts of the plant
(d) all of the above
726.When the materials like sucrose are
transferred to phloem tissue, the osmotic
pressure of the tissue .......... leading to
.......... of water into/from it.
(a) Increases, entry
(b) Decreases, entry
(c) Increases, exit
(d) Decreases, exit
727.The biological process involved in the
removal of these harmful metabolic wastes
from the body is called
(a) Photosynthesis
(b) Respiration
(c) Excretion
(d) Translocation
728. Just as CO2 is removed from the blood in
the lungs, nitrogenous waste such as urea
or uric acid are removed from blood in the -
(a) Kidney
(b) Urinary bladder
(c) Urethr
(d) Ureters
729.Which of the main toxic waste that kidney
filters from blood?
(a) Ammonia
(b) Uric acid
(c) Urea
(d) Water
730. The functional unit of kidney is:
(a) Nephron
(b) Neuron
(c) Glomerulus
(d) Bowman’s Capsule
731.An artificial kidney is a device to remove
nitrogenous waste products from the blood
through-
(a) Diaphragm
(b) Dialysis
(c) ECG
(d) Electrolysis
732 Normally, in a healthy adult, the initial
filtrate in the kidneys is about :
(a) 100 L/day
(b) 150 L/day
(c) 180 L/day
(d) 200 L/day
733. Sweating is meant for:
(a) Regulation of body temperature
(b) Removal of excess salt
(c) Removal of excess water
(d) All of the above
734 Oxygen is a waste product generated during
.......... in plants.
(a) Respiration
(b) Photosynthesis
(c) Both respiration and photosynthesis
(d) None of the above
735.Many-plant waste products are stored in:
(a) Chloroplast
(b) Mitochondria
(c) Cellular vacuoles
(d) Cytoplasm
736.How many pairs of salivary glands are
found in humans?
(a) Four
(b) Two
(c) Three
(d) Six
837. Assertion : Ethanol is obtained during the
anaerobic process of respiration.
Reason : This is due to presence of oxygen
and it takes place in the mitochondria.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
738.Assertion : Carbon monoxide is injurious
to the health of the individual.
Reason : Carbon monoxide has very strong
affinity for the blood.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
U39.Assertion : In plants, water is transported
through phloem.
Reason : It is because sieve tubes are absent
in phloem.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
740.Assertion : Dark phase reactions take place
at night.
Reason : Dark phase is independent of light,
hence, called light independent phase.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
741. Assertion : The main organ of human
excretory system is kidney.
Reason : Kidneys perform the function of
adding water and nitrogenous wastes from
the body.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
Direction For Questions (46-50)
This transport of soluble products of
photosynthesis is called translocation and
it occurs in the part of the vascular tissue
known as phloem. Besides the products
of photo-synthesis, the phloem transports
amino acids and other substances. These
substances are especially delivered to the
storage organs of roots, fruits and seeds
and to growing organs. The translocation
of food and other substances takes place in
the sieve tubes with the help of adjacent
companion cells both in upward and
downward directions. Unlike transport in
xylem which can be largely explained by
simple physical forces, the translocation
in phloem is achieved by utilising energy,
Material like sucrose is transferred into
phloem tissue using energy from ATP. This
increases the osmotic pressure of the tissue
causing water to move into it. This pressure
moves the material in the phloem to tissues
which have less pressure. This allows the
phloem to move material according to the
plant’s needs. For example, in the spring,
sugar stored in root or stem tissue would
be transported to the buds which need
energy to grow.
742.The transportation of materials into
phloem requires:
(a) Amino acids
(b) Food
(c) Water
(d) Energy
743. The translocation of food in plants takes
place in:
(a) Upward direction only
(b) Downwards direction only
(c) Leaves only
(d) Both in upward and downward
directions
744.The components which help in the
translocation process in plants are:
(a) Amino acid
(b) Sieve tubes and companion cells
(c) Fruit
(d) Seeds
745.The phenomenon of transportation of food
in plants in its dissolved form is called:
(a) Translocation
(b) Excretion
(c) Transpiration
(d) Nutrition
746. Which of the following vascular tissue is
responsible for the transportation of soluble
products of photosynthesis?
(a) Xylem
(b) Phloem
(c) Both Phloem and Xylem
(d) None of the above
complex and large components of food are
broken down into their respective simpler
and smaller forms with the help of various
hydrolytic enzymes. In human beings, the
process of intake of essential nutrients in
the form of food takes place through an
entire system in human includes alimentary
canal and its associated digestive glands.
The alimentary canal is a muscular coiled
tubular structure about 9 m in length that
begins from mouth and ends whit anus.
The various organs of the human digestive
system in sequence are: Mouth, Oesophagus
(or Food pipe), Stomach, Small intestine
and Large intestine. The glands which
are associated with the human digestive
system and form a part of the human
digestive system are: Salivary glands, Liver
and Pancreas. The ducts of various glands
open into the alimentary canal and pour
the secretions of the digestive juices into
the alimentary canal.
650.In which of the following organ is digested?
(a) mouth
(b) stomach only
(c) large intestine
(d) stomach and small intestine
651..Which of the following is the final product
of digestion of protein?
(a) Glycerol
(b) Amino acids
(c) Glucose
(d) Nitric acid
652. What are peristaltic movements?
(a) Rhythmic contraction of canal
(b) Movement of heart
(c) Movement of ribs
(d) Movement of body parts
653.Which of the following enzyme is present
in Saliva?
(a) Amylase
(b) Pepsinogen
(c) Trypsin
(d) Lipase
654.Which chemical substance is responsible
for acidic medium of stomach?
(a) Bile juice
(b) HCl
(c) CH3COOH
(d) Lactic acid
They create by-products that art not only
useless for the cells of the body, but could
even be harmful. These waste by-products
are therefore needed to be removed from
the body and discarded outside by a
process called excretion. Again, if the basic
rules for body design in multi-cellular
organisms are followed, a specialised tissue
for excretion will be developed, which
means that the transportation system will
need to transport waste away from cells to
this excretory tissue.
655.The excretory materials are temporarily
stored in:
(a) Urethra
(b) Kidneys
(c) Ureters
(d) Urinary bladder
656.The main excretory by-product in human
beings is
(a) Creatine
(b) Urea
(c) Uric acid
(d) None of the above
657.The process of removal of nitrogenous waste materials from the body is called .......... .
(a) Nutrition
(b) Respiration
(c) Excretion
(d) Transportation
658. Which is the main excretory organ in
human beings?
(a) Intestine
(b) Kidneys
(c) Lungs
(d) Heart
659.Which is known as basic filtration unit in
the kidneys?
(a) Alveoli
(b) Nephron
(c) Stomata
(d) Guard cells
Direction For Questions
Arteries are the vessels which carry blood
away from the heart to various organs of
the body. Since the blood emerges from
the heart under high pressure, the arteries
have thick, elastic walls. Veins collect the
blood from different organs and bring it
back to the heart. They do not need thick
walls because the blood is no longer under
pressure, instead they have valves that
ensure that the blood flows only in one
direction.
On reaching an organ or tissue, the artery
divides into smaller and smaller vessels
to bring the blood in contact with all the
individual cells. The smallest vessels have
walls which are one-cell thick and are called
capillaries. Exchange of material between
the blood and surrounding cells takes place
across this thin wall. The capillaries then
join together to form veins that convey the
blood away from the organ or tissue.
660.What is importance of thin walls of blood
capillaries?
(a) Thin walls of blood capillaries provide
them protection.
(b) Exchange of materials between the
blood and surrounding cells take
place across the thin walls of blood
capillaries.
(c) Thin walls of blood capillaries help on
smooth flow of blood.
(d) All of the above.
661.Write two differences between arteries and
veins.
(a) Arteries are blood vessels while veins
are not.
(b) Arteries have thick walls while veins
have thin walls.
(c) Arteries have valves while do not have
valves.
(d) All of the above.
662.What is the function of valves in veins?
(a) Valves ensure the unidirectional flow
of blood.
(b) Valves increase the oxygen carrying
capacity of the blood.
(c) Valves protect the veins from outer
shocks.
(d) Valves withstand the high pressure of
blood in veins.
663.Which blood vessels have high blood
pressure and what they have to withstand
this high pressure?
(a) Both arteries and veins have same
pressure of blood and they are thich
walled vessels.
(b) Arteries have high blood pressure and
they have elastic and thick walls to
withstand this high pressure.
(c) Veins have high blood pressure and
they have to valves to withstand this
high pressure.
(d) None of the above.
664.What is the function of arteries?
(a) Arteries have high blood pressure.
(b) Arteries are present in the body of
human beings.
(c) Arteries are thicker than veins.
(d) Arteries are the blood vessels which
carry blood away from the heart to
various organs of the body.
Direction For Questions (217-221)
This transport of soluble products of
photosynthesis is called translocation and
it occurs in the part of the vascular tissue
known as phloem. Besides the products
of photo-synthesis, the phloem transports
amino acids and other substances. These
substances are especially delivered to the
storage organs of roots, fruits and seeds
and to growing organs. The translocation
of food and other substances takes place in
the sieve tubes with the help of adjacent
companion cells both in upward and
downward directions. Unlike transport in
xylem which can be largely explained by
simple physical forces, the translocation
in phloem is achieved by utilising energy,
Material like sucrose is transferred into
phloem tissue using energy from ATP. This
increases the osmotic pressure of the tissue
causing water to move into it. This pressure
moves the material in the phloem to tissues
which have less pressure. This allows the
phloem to move material according to the
plant’s needs. For example, in the spring,
sugar stored in root or stem tissue would
be transported to the buds which need
energy to grow.
665.The transportation of materials into
phloem requires:
(a) Amino acids
(b) Food
(c) Water
(d) Energy
666.The translocation of food in plants takes
place in:
(a) Upward direction only
(b) Downwards direction only
(c) Leaves only
(d) Both in upward and downward
directions
667.The components which help in the
translocation process in plants are:
(a) Amino acid
(b) Sieve tubes and companion cells
(c) Fruit
(d) Seeds
66i.The phenomenon of transportation of food
in plants in its dissolved form is called:
(a) Translocation
(b) Excretion
(c) Transpiration
(d) Nutrition
669.Which of the following vascular tissue is
responsible for the transportation of soluble
products of photosynthesis?
(a) Xylem
(b) Phloem
(c) Both Phloem and Xylem
(d) None of the above
Direction For Questions (222-226)
The small intestine is the site of the complete
digestion of carbohydrates, proteins and
fats. It receives the secretions of the liver
and pancreas for this purpose. The food
coming from the stomach is acidic and
has to be made alkaline for the pancreatic
enzymes to act. Bile juice from the liver
accomplishes this in addition to acting on
fats. Fats are present in the intestine in
the form of large globules which makes it
difficult for enzymes to act on them. Bile
salts break them down into smaller globules
increasing the efficiency of enzyme action.
The pancreas secretes pancreatic juice
which contains enzymes like trypsin for
digesting proteins and lipase for breaking
down emulsified fats. The walls of the small
intestine contain glands which secrete
intestinal juice. The enzymes present in it
finally convert the proteins to amino acids,
complex carbohydrates into glucose and
fats into fatty acids and glycerol.
679.The food coming from the stomach is made
alkaline by:
(a) Bile juice
(b) Pancreatic juice
(c) Gastric juice
(d) Intestinal juice
671. In small intestine proteins are decomposed
into:
(a) fatty acids only
(b) glucose
(c) amino acids
(d) fatty acids and glycerol
672.Which enzymes are present in the pancreatic
juice for digestion of proteins and fats?
(a) Amylase and pepsin
(b) Amylase and lipase
(c) Pepsin and trypsin
(d) Lipase and trypsin
673. Which two organs release their secretions
into small intestine for digestion of food?
(a) Liver and stomach
(b) Oesophagus and stomach
(c) Pancreas and stomach
(d) Liver and pancreas
674. The complete digestion of food takes place
in:
(a) small intestine
(b) stomach
(c) mouth
(d) large intestine
Direction For Questions (227-231)
Nitrogenous materials formed due to
metabolic activities are need to be
removed. The biological process involved
in the removal of these harmful metabolic
wastes from the body is called excretion.
Different organisms use varied strategies to
do this. Many unicellular organisms remove
these wastes by simple diffusion from the
body surface into the surrounding water
while complex multi-cellular organisms
use specialised organs to perform the same
function.
675.Study the picture given above and choose
the correct combination of plots provided
in the following table.X Process usedFunction
(a) Dialysing
pump
Filtration To draw
blood from
the body and
send it to
dialyser
(b) Dialysate Osmosis To add fluid
to the blood
(c) Blood
thinner
Clotting To remove
the clots
from the
blood
(d) Dialyser Diffusion To remove
the excess
wastes and
fluid from
the blood
676.Which of the following statement(s) is (are)
true about excretion in human beings?
I. Urine is stored in the urethra until the
urge of passing it out.
II. Each kidney has large numbers of
filtration units called nephrons.
III.The bladder is muscular, so it is under
nervous control.
IV.Kidneys are the primary excretory
organs.
(a) I and II only
(b) I and III only
(c) II, III and IV only
(d) I and IV only
677 Study the table below and select the row
that has the incorrect information.Excretory
OrganSubstances Excreted
(a) Oil glands Sebum
(b) Skin Sweat
(c) Lungs Urea
(d) Kidneys Nitrogenous wastes
678. The given figure represents the structure of
a nephron.
Which section of the nephron is responsible
for concentrating the solute in the filtrate?
(a) P
(b) Q
(c) R
(d) S
679.The excretory system of human beings
include
(a) a kidney, a ureter, a urinary bladder
and a urethra
(b) a pair of kidneys, a pair of ureters, a
pair of urinary bladders and a urethra
(c) a pair of kidneys, a pair of urinary
bladders, a ureter, and a urethra
(d) a pair of kidneys, a pair of ureters, a
urinary bladder and a urethra
Plants have low energy needs and can use
relatively slow transport systems. The
distances over which transport systems
have to operate, however, can be very large
in plants such as very tall trees. Plant
transport systems move energy stores
from leaves and raw materials from roots.
These two pathways are constructed as
independently organised conducting tubes.
680.. Force of cohesion develops due to
(a) attraction between similar molecules
(b) attraction between different molecules
(c) attraction between xylem and phloem
(d) attraction between xylem and water
681.. Given graph shows the rates of water
absorption and transpiration of a plant
during a 24-hour period.
The difference between the rates of
transpiration and water absorption between
00:00 and 06:00 hours is due to:
(a) The rate of absorption fell behind the
rate of transpiration during the day,
but exceeded it at night.
(b) Rate of absorption is always higher
than rate of transpiration.
(c) Rate of absorption is always equal to
rate of transpiration.
(d) The rate of absorption is higher than
the rate of transpiration during the
day, but decreases at night.
682.The given figure represents the movement of water and minerals in xylem and movement
of food in phloem..Choose the correct combination of plots provided in the following table:X Y Z
(a) Major
conducting
cells in xylem
Denucleated Flow is
bidirectional
(b) Major
conducting
cells in phloem
Nucleated Flow is
unidirectional
(c) Major
conducting
cells in xylem
and phloem
Denucleated Flow is
unidirectional
(d) Cells of xylem
but function is
not defined
Nucleated Flow is
bidirectional
683.Which of the following statement(s) is (are)
true about transport in plants?
I. Beside water, xylem also transports
amino acids and other substances.
II. The translocation in phloem is achieved
by utilising energy.
III.Transpiration helps in the absorption.
IV.This transport of soluble products of
photosynthesis occurs in phloem.
(a) I and II only
(b) II, III and IV only
(c) I, II and III only
(d) I, III and IV only
684.Study the table below and select the row
that has the incorrect information.
Cell Tissue
(a) Vessels and tracheid Xylem
(b) Sieve tubes cells Phloem
(c) Sieve tube cells and tracheid Xylem
(d) Companion cell Phloem
Direction For Questions (237-241)
The food material taken in during the
process of nutrition is used in cells to provide
energy for various life processes. Diverse
organisms do this in different ways - some
use oxygen to break-down the food material
completely, some use other pathways that
do not involve oxygen. In all cases, the first
step is the break-down of food material and
it takes place in the cytoplasm. Further,
the product of breakdown food may be
converted into ethanol and carbon dioxide.
Breakdown of food product using oxygen
takes place in the mitochondria. Sometime
food product is converted into lactic acid
which is also a three-carbon molecule.
685.Athletes suffers from muscle cramps due to
(a) conversion of pyruvate to ethanol
(b) conversion of pyruvate to glucose
(c) non-conversion of glucose to pyruvate
(d) conversion of pyruvate to lactic acid
686. The given graph indicates the effect
of exercise intensity on carbohydrate
consumption..At high intensity of exercise
(a) the anaerobic consumption of sugars
increases
(b) the aerobic consumption of sugars
increases
(c) the anaerobic consumption of sugars
decreases
(d) no consumption of sugars takes place
687.Study the graph below that represents the
blood test reports of an athlete just before
and after a race..Choose the correctcombination of plots provided in the following table.Section of race Concentration of lactic acidType of respiration
(a) A-B (sprint
start)
Changing
high to low
Changing
from
anaerobic
to aerobic
(b) B-C
(maintaining
speed)
High to low Anaerobic
(c) C-D (sprint
finish)
High Aerobic
(d) D-E (just after
sprint finishing)
Low Aerobic
688.Which of the following statement(s) is (are)
true about energy released during cellular
respiration?
I. It is used immediately to synthesise
ADP.
II. It is used to fuel all other activities in
the cell.
III.ADP is the energy currency for most
cellular processes.
IV.An ADP molecule is formed from ATP
and inorganic phosphate.
(a) I and II only
(b) II only
(c) I, II and III only
(d) I, III and IV only
689.Study the table below and select the row
that has the correct information.
Break
down of
pyruvate
in
Take place in End
products
(a) Absence
of oxygen
Yeast Lactic
acid +
Energy
(b) Lack of
oxygen
Muscle cells Ethanol
+ CO2 +
Energy
(c) Presence
of oxygen
Mitochondria CO2 2 + + H O
Energy
(d) Presence
of oxygen
Mitochondria Ethanol
+ CO2 +
Energy
Direction For Questions (242-246)
Carbon and energy requirements of the
autotrophic organism are fulfilled by
photosynthesis. It is the process by which
autotrophs take in substances from the
outside and convert them into stored
forms of energy. This material is taken
in the form of carbon dioxide and water
which is converted into carbohydrates in
the presence of sunlight and chlorophyll.
Carbohydrates are utilised for providing
energy to the plant. The carbohydrates
which are not used immediately are stored
in the form of starch, which serves as the
internal energy reserve to be used as and
when required by the plant. A somewhat
similar situation is seen in us where some of
the energy derived from the food we eat is
stored in our body in the form of glycogen.
That means the complex substances have
to be broken down into simpler ones before
they can be used for the upkeep and growth
of the body. To achieve this, organisms use
biocatalysis.
690.Heterotrophs depend for energy on
(a) autotrophs
(b) producers
(c) herbivores
(d) both (a) and (b)
691. The picture given below represents how
autotrophs take in substances from the
outside and convert them into stored forms
of energy.
The correct equation for the given process
is
(a) 6 6 CO2 2 + + H O$C H6 12 6 O O6 2
(b) 6 2 O H + + 6 6 2 6 O C $ H O12 6 2 CO
(c) C H6 12 6 O H + + 6 6 2 2 O C $ O O6 2
(d) 6 6 CO2 2 + + O C $ 6 1 H O2 6 6H O2
692. Study the picture below that represents the
mode of action of a biocatalyst.
Choose the correct combination of plots
provided in the following table.
Biocatalyst
also termed
as
Biocatalyst
found in
human saliva
Biocatalyst
produced in
human stomach
(a) Enzymes Amylase Pepsin
(b) Hormones Amylase Trypsin
(c) Enzymes Trypsin Pepsin
(d) Energy Pepsin Amylase
693.Which of the following statement (s) is
(are) true?
I. Carbon and energy requirements of the
autotrophic organism are fulfilled by
photosynthesis.
II. Carbohydrates are utilised for providing
energy to the plant.
III.Chlorophyll is essential for photosynthesis.
IV.Autotrophs survival depends directly or
indirectly on heterotrophs.
(a) I and II only
(b) II and III only
(c) I, II and III only
(d) I, III and IV only
694. Study the table below and select the row
Which of the following statement(s) is (are)
true about stomata?
I. These are typically found in leaves only.
II. Guard cells are responsible for regulating
the size of the stomatal opening.
III.These control the exchange of gases not
water vapours.
IV.These get closed at night to prevent
water loss in plants.
(a) I and II only
(b) II and IV only
(c) I, II and III only
(d) I, III and IV only
695 Study the table below and select the row
that has the correct information.
Epidermal cells Guard cell
(a) Bean-shaped in
surface view
Irregular in
shape
(b) Can manufacture
food by
photosynthesis
Can’t
manufacture
food by
photosynthesis
(c) Contain
chloroplast
Doesn’t contain
chloroplast
(d) Protects all parts
of the plant
Control
stomatal
opening
696.A plant is kept in the dark for two days. A
leaf is used in an experiment to investigate
the effect of two factors on photosynthesis
as shown in the diagram.
What are the colours of C and D, when
the leaf is tested for starch, using iodine
solution?
C D
(a) Brown Blue/black
(b) Blue/black Blue/black
(c) Brown Brown
(d) Blue/black Brown
697.. Various maintenance processes are needed
to:
(a) Survival
(b) Prevent damage and break down
(c) Routine process
(d) Release energy
698.All the sources of energy need to be broken
down in the body and converted into:
(a) Uniform energy
(b) Molecular energy
(c) Chemical reactions
(d) Digestive process
699.The reason for single cell diffusion
inefficiency in multicellular organism is
(a) Cell diffusion is a complex process
(b) Big size and complex body designs
(c) Cell diffusion requires lots of time
(d) Cell diffusion is rather a simple
process to be carried out in multi cell
organism
700.In multi-cellular organisms, various body
parts have specialized in the functions they
perform with the help of:
(a) Specialized cells
(b) Multiple organs
(c) Multiple structure
(d) Specialized tissues
701. Choose the incorrect statement:
(a) We don’t need energy while not doing
any activity
(b) We release energy and feel tired while
doing various activities
(c) Energy is needed to maintain the
state of body
(d) Our body need to synthesize protein
to develop
702 . The heterotrophs survival depends directly
or indirectly on:
(a) Surroundings
(b) Ecology and surrounding
(c) Autotrophs
(c) Molecular structure
703.The process by which autotrophs take in
substances from the outside and convert
them into stored forms of energy is known
as
(a) Photosynthesis
(b) Respiration
(c) Molecular breakup
(d) Cell diffusion
704 Human body stores energy in form of:
(a) Glucose
(b) Insulin
(c) glycogen
(d) Fructose
705. The green organelle on surface of leaves
containing chlorophyll are knows as
(a) Xylem
(b) Epidermis
(c) Chloroplasts
(d) Vascular bundle
706.The purpose of closing the pores by the
plants when it doesn’t need photosynthesis
is
(a) To save the water
(b) To save energy
(c) To save food
(d) None of the above
707. Most of the plant’s nitrogen, phosphorus,
iron and magnesium are taken up from the
(a) Aquatic sources
(b) Soil
(c) Mountains
(d) Sea water
708. Organism who break down the food outside
their body are
(a) Fungi
(b) Virus
(c) Tape worm
(d) None of the above
709. The broken down food into simpler form in
amoeba is diffused into
(a) Cytoplasm
(b) Ribosome
(c) DNA
(d) Mesosome
710.“Water” like fluid in our mouth is secreted
by
(a) Pancreas
(b) Thyroid
(c) Pituitary
(d) Salivary gland
711. Hydrochloric acid facilitates the action of
.......... .
(a) keratin
(b) collagen
(c) elastin
(d) pepsin
712 The .......... delivers the digestive juice to
the small intestine through small tubes
called ducts.
(a) Stomach
(b) Pancreas
(c) Large intestine
(d) Anus
713. The inner lining of the .......... has numerous
finger-like projections called villi which
increase the surface area for absorption.
(a) small intestine
(b) large intestine
(c) stomach
(d) pancreas
714.This process of break-down of glucose, a
six-carbon molecule, into a three-carbon
molecule pyruvate, takes place in
(a) Cytoplasm
(b) Mitochondria
(c) Golgi bodies
(d) Endoplasmic reticulum
715. Pyruvate is a-
(a) three-carbon molecule
(b) four-carbon molecule
(c) five-carbon molecule
(d) six-carbon molecule
716.The respiratory route of air in the
respiratory tract of human is:
(a) nostrils " pharynx " larynx "
trachea " alveoli.
(b) alveoli " pharynx " larynx " trachea
" nostrils.
(c) alveoli " larynx " trachea " pharynx
" nostrils.
(d) nostrils " trachea " pharynx "
larynx " alveoli.
717. Blood consists of a fluid medium called
.......... in which the cells are suspended.
(a) Plasma
(b) RBCs
(c) Platelets
(d) WBCs
718.In higher vertebrates, systemic circulation
takes place between .......... .
(a) body parts and lungs
(b) body parts and heart
(c) heart and body parts
(d) lungs and heart
719.Which instrument is used to measure blood
pressure?
(a) Thermometer
(b) Electrocardiograph
(c) Pulse recorder
(d) Sphygmomanometer
720.Arteries are the vessels which carry blood
away from the
(a) Various body parts to the heart
(b) Heart to various organs of the body
(c) Heart to lungs
(d) Lungs to heart
721.Heart is surrounded and protected by
.......... .
(a) Retro peritoneum
(b) Muscles
(c) Pericardium
(d) Lungs
722.The colour of blood plasma is:
(a) Red
(b) Pale yellow
(c) Yellowish green
(d) Pink
723 Vitamin .......... helps in blood clotting.
(a) Vitamin A2
(b) Vitamin B
(c) Vitamin E4
(d) Vitamin K
724.. The water which is lost through the stomata
is replaced by
(a) water from the xylem vessels in the
leaf
(b) water from the phloem vessels in the
leaf
(c) water from the veins in the leaf
(d) none of the above
725 Trans location is the process in which
plants deliver:
(a) minerals from leaves to other parts of
the plant
(b) plant growth hormones from leaves to
other parts of the plant
(c) water and organic substance from
leaves to other parts of the plant
(d) all of the above
726.When the materials like sucrose are
transferred to phloem tissue, the osmotic
pressure of the tissue .......... leading to
.......... of water into/from it.
(a) Increases, entry
(b) Decreases, entry
(c) Increases, exit
(d) Decreases, exit
727.The biological process involved in the
removal of these harmful metabolic wastes
from the body is called
(a) Photosynthesis
(b) Respiration
(c) Excretion
(d) Translocation
728. Just as CO2 is removed from the blood in
the lungs, nitrogenous waste such as urea
or uric acid are removed from blood in the -
(a) Kidney
(b) Urinary bladder
(c) Urethr
(d) Ureters
729.Which of the main toxic waste that kidney
filters from blood?
(a) Ammonia
(b) Uric acid
(c) Urea
(d) Water
730. The functional unit of kidney is:
(a) Nephron
(b) Neuron
(c) Glomerulus
(d) Bowman’s Capsule
731.An artificial kidney is a device to remove
nitrogenous waste products from the blood
through-
(a) Diaphragm
(b) Dialysis
(c) ECG
(d) Electrolysis
732 Normally, in a healthy adult, the initial
filtrate in the kidneys is about :
(a) 100 L/day
(b) 150 L/day
(c) 180 L/day
(d) 200 L/day
733. Sweating is meant for:
(a) Regulation of body temperature
(b) Removal of excess salt
(c) Removal of excess water
(d) All of the above
734 Oxygen is a waste product generated during
.......... in plants.
(a) Respiration
(b) Photosynthesis
(c) Both respiration and photosynthesis
(d) None of the above
735.Many-plant waste products are stored in:
(a) Chloroplast
(b) Mitochondria
(c) Cellular vacuoles
(d) Cytoplasm
736.How many pairs of salivary glands are
found in humans?
(a) Four
(b) Two
(c) Three
(d) Six
837. Assertion : Ethanol is obtained during the
anaerobic process of respiration.
Reason : This is due to presence of oxygen
and it takes place in the mitochondria.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
738.Assertion : Carbon monoxide is injurious
to the health of the individual.
Reason : Carbon monoxide has very strong
affinity for the blood.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
U39.Assertion : In plants, water is transported
through phloem.
Reason : It is because sieve tubes are absent
in phloem.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
740.Assertion : Dark phase reactions take place
at night.
Reason : Dark phase is independent of light,
hence, called light independent phase.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
741. Assertion : The main organ of human
excretory system is kidney.
Reason : Kidneys perform the function of
adding water and nitrogenous wastes from
the body.
(a) Both Assertion and Reason are true
and Reason is the correct explanation
of Assertion.
(b) Both Assertion and Reason are
true but Reason is not the correct
explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.
Direction For Questions (46-50)
This transport of soluble products of
photosynthesis is called translocation and
it occurs in the part of the vascular tissue
known as phloem. Besides the products
of photo-synthesis, the phloem transports
amino acids and other substances. These
substances are especially delivered to the
storage organs of roots, fruits and seeds
and to growing organs. The translocation
of food and other substances takes place in
the sieve tubes with the help of adjacent
companion cells both in upward and
downward directions. Unlike transport in
xylem which can be largely explained by
simple physical forces, the translocation
in phloem is achieved by utilising energy,
Material like sucrose is transferred into
phloem tissue using energy from ATP. This
increases the osmotic pressure of the tissue
causing water to move into it. This pressure
moves the material in the phloem to tissues
which have less pressure. This allows the
phloem to move material according to the
plant’s needs. For example, in the spring,
sugar stored in root or stem tissue would
be transported to the buds which need
energy to grow.
742.The transportation of materials into
phloem requires:
(a) Amino acids
(b) Food
(c) Water
(d) Energy
743. The translocation of food in plants takes
place in:
(a) Upward direction only
(b) Downwards direction only
(c) Leaves only
(d) Both in upward and downward
directions
744.The components which help in the
translocation process in plants are:
(a) Amino acid
(b) Sieve tubes and companion cells
(c) Fruit
(d) Seeds
745.The phenomenon of transportation of food
in plants in its dissolved form is called:
(a) Translocation
(b) Excretion
(c) Transpiration
(d) Nutrition
746. Which of the following vascular tissue is
responsible for the transportation of soluble
products of photosynthesis?
(a) Xylem
(b) Phloem
(c) Both Phloem and Xylem
(d) None of the above
747Assertion : in the daytime, CO2 generated during respiration is used up for photosynthesis.
Reason : There is no CO2 release during day.
748 Assertion : Lungs always contain a residual volume of air.
Reason : It provides sufficient time for oxygen to be absorbed and for carbon dioxide to be
released.
749Assertion : Transpiration is a necessary evil.
Reason : It causes water loss but helps in absorption and upward movement of water and
minerals.
750.Assertion : During physiology of excretion, deamination does not take place in liver.
Reason : Deamination is a process to make use of excess of amino acids which cannot be
incorporated into protoplasm.
751. Assertion : The muscular walls of ventricles are thicker than auricles.
Reason : This helps in preventing the back flow of blood
752.Assertion : The wall off stomach possess thick layers of muscles.
Reason : These muscles help in mixing the food with the enzymes presents in the alimentary
753.Assertion : The release of energy in aerobic process is much more than in anaerobic process.
Reason : Each glucose molecule produces 2 molecules of ATP and 38 molecules of ATP in
aerobic respiration.
754. Assertion : Lipases help in emulsification of fats.
Reason : Lipases hydrolyses fats
755.. Assertion : Bile is essential for digestion of lipids.
Reason : Bile juice contains enzymes.
756.Which of the following structures is involved in gaseous exchange in woody stem of a plant?
(a) Stomata
(b) Lenticel
(c) Hydathode
(d) Epidermi
757.The air consist of 78% Nitrogen . Choose the forms in which most plants absorb nitrogen:
1. Proteins
2. Nitrates and nitrites
3. Urea
4. Atmospheric nitrogen
758. Choose the correct option.
(a) 1 and 2
(b) 2 and 3
(c) 3 and 4
(d) 1 and 4
759. Only two of the following Statements accurately describe what happens in the mouth.
1. Amylase breaks down large starch molecules into smaller maltose molecules.
2. Chewing increases the surface area of food for digestion.
3. Saliva emulsifies fats into smaller droplets.
4. Teeth breakup large insoluble molecules into smaller soluble molecules
which statements are correct?
(a) 1 and 2
(b) 2 and 3
(c) 3 and 4
(d) 1 and 4
760..Lack of qxygen in muscle often leads to cramps among Athletes . This results due to :
(a) conversion of Pyruvate to Ethanol
(b) conversion of Pyruvate to Glucose
(c) conversion of Glucose to Pyruvate
(d) conversion of Pyruvate to Lactic acid
761.What is the correct route for blood flow in a human?
(a) Left atrium " Left ventricle " Lungs " Right ventricle " Right atrium
(b) Left atrium"Left ventricle "Right ventricle "
Right atrium " Lungs
(c) Right atrium"Right ventricle "Left ventricle
" Left atrium " Lungs
(d) Right atrium "Right ventricle "Lungs "Left atrium " Left ventricle
762. Which of these is not required for photosynthesis?
a. Water b. Oxygen c. Sunlight d. Carbon dioxide
2. The mode of nutrition in Cuscuta is
a. saprophytic b. parasitic c. holozoic d. autotrophic.
3. Paramecium captures food with the help of
a. tentacles b. cilia c. teeth d. pseudopodia.
4. Which raw material is responsible for release of molecular oxygen during photosynthesis?
a. Carbon dioxide b. Glucose c. Water d. Chlorophyll
763.The cellular energy reserve in heterotrophs is
a. glycogen b. starch c. fatty acid d. protein.
764.The largest gland associated with human alimentary canal is
a. adrenal gland b. pancreas c. salivary gland d. liver.
765.Which of the following is mainly digested in stomach?
a. Carbohydrate b. Protein c. Lipids d. Both (a) and (b).
766. The process by which digested food passes through the intestinal wall into blood stream is known as
a. assimilation b. absorption c. egestion d. excretion.
767.Amoeba ingests food by the process of
a. dialysis b. cytokinesis c. phagocytosis d. amoebiasis.
768.While carrying the starch test on leaf, it is essential to boil the leaf in a water bath with alcohol to
a. remove chlorophyll from the leaves b. remove starch from the leaf
c. make the cell more permeable to iodine d. stop all chemical reactions in the cell.
769. In stomach, hydrochloric acid creates an acidic medium so that
a. enzyme trypsin digests the protein b. enzyme pepsin digests the starch
c. enzyme pepsin digests the protein d. enzyme trypsin digests the starch.
770. Which of the following enzyme is present in bile?
a. Lipase b. Trypsin c. Pepsin d. None of these
771. In humans the process of digestion begins in the
a. mouth b. pharynx c. stomach
772. Large intestine in man carries out
a. absorption b. assimilation c. digestion of fat d. digestion of protein.
773. The light reaction of photosynthesis takes place in the
a. stroma of chloroplast b. grana of chloroplast c. matrix of mitochondria d. cytoplasm of leaf cell.
774.. What are the end products of light reaction of photosynthesis?
a. Glucose and ATP b. Glucose and oxygen c. ATP, NADPH and O2 d. ATP, H2 and O2
775.The inner lining of stomach is protected from harmful effect of hydrochloric acid by one of the following
a. Mucus b. Pepsin c. Trypsin d. Bile
776.Which of the following component of our food is digested by an enzyme which is present in saliva as well as in
pancreatic juice?
a. Lipid b. Protein c. Carbohydrate d. Fat
777.The opening and closing of stomatal pores depends upon
a. temperature b. concentration of carbon dioxide in guard cell
c. concentration of oxygen in guard cell d. change in turgidity of the guard cell.
778.The first enzyme to mix with food in the digestive tract is
a. pepsin b. trypsin c. amylase d. lipase.
779. Which of the following does not occur in photosynthesis?
a. Conversion of light energy to chemical energy b. Oxidation of carbon dioxide to glucose
c. Photolysis of water d. Absorption of light
energy by chlorophyll
780.. In which of the following groups of organisms, the food is broken down outside the body and then absorbed?
a. Yeast, Blue green algae, Mushroom b. Amoeba, Paramecium, Euglena
c. Cuscuta, Mushroom, Rhizopus d. Yeast, Mushroom, Rhizopus
781. Emulsification of fat is done by
a. pepsin enzyme b. pancreatic lipase c. intestinal lipase d. bile juice.
782.The longest part of alimentary canal is
a. large intestine b. small intestine c. oesophagus d. stomach.
783.Pancreatic juice contain enzymes which digest
a. Carbohydrate and protein b. Carbohydrate and lipid
c. Lipid and protein d. Carbohydrate, Lipid and protein
784.In which form do plants absorb nitrogen?
a. Atmospheric nitrogen b. Urea c. Nitrites and nitrates d. Uric acid
785. The exit of faecal matter from our body is regulated by
a. anal sphincter b. rectum c. colon d. caecum.
786.. Which type of medium is required for proper functioning of pancreatic juice?
a. Acidic b. Alkaline c. Neutral d. Both (a) and (c)
787.In Amoeba, digestion of food takes place in
a. food vacuole b. cytoplasm c. contractile vacuole d. mitochondria.
788.Which of the following enzyme requires acidic medium?
a. Salivary amylase b. Pancreatic lipase c. Pepsin
789.Gaseous exchange in fish takes place through
a skin b. tracheae c. gills d. lungs.
790. Aerobic respiration takes place in the
a. cytoplasm b. mitochondria c. vacuole d. nucleus.
791.The end products of fermentation of glucose by yeast are
a. ethanol, CO2 and 36 ATP b. CO2, H2O and 36 ATP
c. ethanol, CO2 and 2ATP d. lactic acid, CO2 and 2 ATP.
792. The passage of air during inhalation is
a. pharynx → nasal cavity → larynx → trachea bronchi → bronchioles
b. nasal cavity → pharynx → larynx → trachea → bronchi → bronchioles
c. larynx → nasal cavity’ → pharynx → trachea → bronchioles → alveoli
d. larynx → pharynx → trachea → alveoli → bronchioles.
793 Exchange of gases in woody stem occurs through
a. stomata b. lenticels c. cork d. epidermis.
794.. Pyruvic acid is converted to lactic acid in the of muscle cells.
a. cytoplasm b. mitochondria c. Golgi body d. none of these
795.The energy rich compound produced during respiration is
a. AMP b. ADP c. ATP d. pyruvate.
796.. The common stage between aerobic and anaerobic respiration is
a. reduction b. glycolysis c. Kreb’s cycle d. oxidation.
797. Which of the following prevents the collapse of air passage?
a. Diaphragm b. Rings of cartilage c. Larynx d. Alveoli
798. Which of the following is not a characteristic of respiratory organ?
a. Large surface area b. Richly supplied with blood capillaries
c. Thick and dry surface d. Thin and delicate surface
799.. Glottis opens on the floor of
a. pharynx b. trachea c. diaphragm d. oesophagus.
800. The biochemical compound that readily combines with oxygen and distributes it throughout the human body is
a. urea b. blood plasma c. haemoglobin d. insulin.
801.. Residual volume of air in lungs
a. helps in inhalation b. allows continuous gases exchange between breathing
c. helps in exhalation d. depletes oxygen from lungs.
802. Which of the following is not a correct statement regarding trachea?
a. It splits into right and left bronchi to supply air to lungs
b. Tracheal rings are C shaped
c. Opening of trachea is covered with ep
803. Which of the following is correct regarding exhalation?
a. Diaphragm is relaxed b. Rib cage lifts up
c. Volume of thoracic cavity increases d. Pressure on the lung decreases
804.Which of these are anaerobes?
a. Yeast, Amoeba b. Yeast, bacteria c. Yeast, algae d. Yeast, blue green algae
805.The direction of diffusion of gases in plants depends upon
a. environmental conditions b. requirement of the plants
c. both (a) and (b) d. none of these.
1806.The rate of breathing is likely to be high in which of the following
a. Mango tree b. Pigeon c. Fish d. Man
807.The end product of glycolysis is
a. lactic acid b. glucose c. ethanol. d. pyruvate.
808. Exchange of gases during respiration takes place at
a. alveoli b. bronchi c. trachea d. nostril.
809.Painful contraction of muscles during heavy physical exercise occur due accumulation of
a) lactose b. ethanol c. pyruvic acid d. lactic acid.
810. Which of the statements are true for respiration?
i. Ribs move inwards and diaphragm is raised during inhalation
ii. Gaseous exchange occurs at alveoli of lungs
iii. Haemoglobin has greater affinity for carbon dioxide than oxygen
iv. Alveoli increases surface area for exchange of gases
a. i. and iv.
b. ii. and iii.
c. i. and iii.
d. ii. and iv.
811.. When air is blown from mouth into a test tube, lime water turns milky due to formation of
a. calcium chloride b. calcium carbonate c. calcium bicarbonate d. calcium hydroxide.
812. Site of glycolysis in cell is
a. mitochondria b. Golgi body c. cytoplasm d. endoplasmic reticulum.
813. In which of following organisms, simple diffusion of gases for breathing and respiration does not occur?
a. Amoeba b. Cockroach c. Paramecium
814.Transport through which of the following is bidirectional
a. Xylem b. Phloem c. Cambium d. Both (a) and (b)
815 Which of the following is not an element of phloem?
a. Sieve tube b. Tracheids c. Companion cell d. Parenchyma
816.. Nucleus is absent in
a. RBC b. Sieve tube c. Companion cell d. both (a) and (b)
817. The process of transport of food from leaves to other parts of the plant is known as
a. Transportation b. Transpiration c. Translocation d. Transformation
818.Valves are absent in
a. Capillaries b. Veins c. Arteries d. Both (a) and (c)
819.Instrument used to measure blood pressure is
a. Manometer b. Barometer c. Sphygmomanometer d. Stethoscope
820 Normal systolic to diastolic blood pressure is
a. 120/80 mm of mercury b. 120/180 mm of mercury
c. 80/120 mm of mercury d. 180/120 mm of mercury
821.Oxygenated blood reaches heart through
a. Pulmonary vein b. Pulmonary artery c. Vena cava d. Aorta
822. The exchange of material between blood and surrounding cells occur at
a. Heart b. Veins c. Arteries d. Capillaries
823.. Which of the following is not true for plants?
a. Slow transport system b. High energy needs
c. Not mobile d. Large number of dead cells
824 Which of the following is responsible for transport of water in herbaceous plants?
a. Transpiration pull b. Root pressure c. Capillary force d. All the above
825. The blood vessel which carries deoxygenated blood to lungs is
a. Pulmonary artery b. Pulmonary vein c. Aorta d. Vena cava
826 Which of the following has three chambered heart?
a. Sparrow b. fish c. crocodile d. frog
827.Which of the following statements are not true regarding translocation in plants?
i. It transports food in the form of sugar
ii. It requires energy in the form of ATP
iii. It transports food in the form of glucose
iv. It is a passive process
a. i. and iv.
b. ii. and iv.
c. i. and ii.
d. iii. and iv.
828. Which chamber of the heart receives oxygenated blood?
a. Right atrium b. Left atrium c. Right ventricle d. Left ventricle
829.The main function of lymph is to
a. transport digested fat b. return extracellular fluid back to blood
c. destroy bacteria and foreign particles d. all of these.
830.Four chambered heart
a. Prevents mixing of oxygenated and deoxygenated blood
b. Allows mixing of oxygenated and deoxygenated blood
c. Is found in cold blooded animals
d. None of the above.m
831.Deoxygenated blood is pumped to all parts of the body in
a. Frog b. Pigeon c. Fish d. Man
832.Single blood circulation is seen in
a. Shark b. Whale c. Bat d. Frog
833. Heart is protected by a double layered protective covering called
a. Pleura b. Pericardium c. Meninges d. Thorax
834.. Thrombocyte helps to
a. Transport oxygen b. Fight infection c. Clot blood d. None of the above
835.Which of the following statements are true for human heart?
i. Walls of ventricle are thicker than walls of atrium
ii. Left atrium receives oxygenated blood through pulmonary vein
iii. Right ventricle receives deoxygenated blood through vena cava
iv. Right atrium receives oxygenated blood through vena cava
a. i. and ii.
b. ii. and iii.
c. i. and iv.
d. ii. and iv.
836. Transpiration helps in
a. Translocation b. Transport of water c. Photosynthesis d. Root pressure
837.. Walls of arteries are
a. Thick and elastic b. Thin and permeable c. Thick and inelastic d. Thin and impermeable
838.. The blood leaving the tissues become richer in
a. Oxygen b. Haemoglobin c. Carbon dioxide d. Urea
839. The basic functional unit of kidney is
a. nephron b. neuron c. nephridia d. cilia.
840. Bunch of capillaries in the Bowman’s capsule is
a. nephric capillaries b. Glisson’s capsule c. glomerulus d. Malpighian capsule.
841.Which blood vessel contains less nitrogenous waste?
a. Renal artery b. Renal capillaries c. Renal vein d. Renal arteriole
842.The process of removing nitrogenous waste from the blood of a person is known as
a. hydrolysis b. haemolysis c. haemodialysis d. electrolysis.
843.Which of the following is reabsorbed in the blood during urine formation?
a. Water b. Glucose c. Amino acid d. All of these
844. Which one of the following is not a part of nephron?
a. Nephric tubule b. Ureter c. Bowman’s capsule d. Both (a) and (c)
845. Amoeba excretes through
a. contractile vacuole b. food vacuole c. nephridia d. kidney.
846 The function of kidney is
a. excretion b. osmoregulation c. both (a) and (b) d. none of these.
847.. The waste material in plants is
a. carbon dioxide b. oxygen c. resins and gums d. all of these.
848. Plants excrete waste materials through
a. old xylem b. old leaves c. stomata and lenticels d. all of these.
849.. The human kidney excretes nitrogenous waste majorly in the form of
a. ammonia b. amino acid c. uric acid d. urea
.
850.. The dialysing solution lack
a. glucose b. water c. urea d. salts.
851.Plant cell store waste in the
a. vacuole b. cytoplasm c. lysosome d. chloroplast.
852.The nephrons discharge their content in the
a. ureter b. urinary bladder c. collecting duct d. Bowman’s capsule.
853. Urinary bladder is under control.
a. endocrine b. nervous c. hormonal d. all of these
854.Which of the following acts as dialysis bag in human kidney?
a. Nephric tubule b. Glomerulus c. Collecting duct d. Urinary bladder
855.The amount of water reabsorbed from nephric tubule depend upon
a. The amount of soluble waste to be removed from blood
b. The amount of water present in blood
c. The length of the nephron
d. Both (a) and (b)
856.Which of the following statements regarding human kidney are incorrect?
i. Kidney is bean shaped
ii. It has 1000 nephrons
iii. Right kidney is slightly lower than left kidney
iv. Left kidney is slightly lower than right kidney
a. i. and iii.
b. ii. and iv.
c. ii. and iii.
d. iii. None of the above
857. The cup shaped part of nephron is called
a. glomerulus b. Malpighian Body c. Bowman’s capsule d. all of these.
858.Which one of the following is not reabsorbed from the primary filtrate?
a. Amino acid b. Urea c. Water d. Glucose
859.. Urine is stored in before they are passed out of the body.
a. kidney b. ureter c. urethra d. urinary bladder
860 Nephrons are
a. functional unit of excretory system b. functional unit of nervous system
c. functional unit of kidney d. none of these.
861. Name the organs that make up the excretory system in humans.
a. Two kidneys b. Two ureters c. Bladder and urethra d. All of these
862. The principal nitrogenous excretory compound in humans is synthesized in the
a. liver b. kidney c. blood d. spleen.
863. The muscular tube which carries urine from kidney to urinary bladder is
a. urethra b. ureter c. collecting duct d. nephric tubule.
864..Inwhichofthefollowinggroupsoforganisms,foodmaterialisbrokendownoutsidethebodyand
absorbed?
(a) Mushroom, green plants, Amoeba
(b) Yeast, mushroom, bread mould
(c) Paramecium, Amoeba,Cuscuta
(d) Cuscuta, lice,tapeworm
865..salivaryamylaseislackinginthesaliva,whichofthefollowingeventsinthemouthcavitywillbe
affected?
(a) Proteins breaking down into amino acids
(b) Starch breaking down into sugars
(c) Fats breaking down into fatty acids and glycerol
(d) Absorption of vitamins
866.Afewdrops ofiodine solutionwere added to ricewater. The solution turned blue‐black in colour.
This indicates that rice water contains
(a) complex proteins
(b) simple proteins
(c) fats
(d) starch
867.The procedure used for cleaning the blood of a person by separating urea from itis called:
(a) osmosis
(b) filtration
(c) dialysis
(d) double circulation
868. How is the circulations of blood in fish different from thatin humans?
(a) The heart in fish is bigger in size.
(b) The flow of blood in fish is unidirectional.
(c) The blood goes through heart only once in fishes.
(d) The heart of fish has more chambers compared to that of a human.
869.. In the experiment given here water will rise in the tube because
1. Which ofthe following statement(s) is (are)true about respiration?
(i) During inhalation, ribs move inward and diaphragm is raised
(ii) In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and
carbon dioxide from the blood into the alveolar air
(iii) Haemoglobin has a greater affinity for carbon dioxide than oxygen
(iv) Alveoli increase surface area for exchange of gases
(a) (i) and (iv)
(b) (ii) and (iii)
(c) (i) and (iii)
(d) (ii) and (iv)
870.Which ofthe following statement(s) is (are)true aboutthe heart?
(i) The left atrium receives oxygenated blood from different parts of the body while the right atrium
receives deoxygenated blood from lungs.
(ii) Left ventricle pumps oxygenated blood to different body parts while right ventricle pumps
deoxygenated blood to lungs.
(iii) Leftatriumtransfersoxygenatedbloodtotherightventriclewhichsends ittodifferentbodyparts.
(iv) The right atrium receives deoxygenated blood from different parts of the body while the left
ventricle pumps oxygenated blood to different parts ofthe body.
(a) (i)
(b) (ii)
(c) (ii) and(iv)
(d) (i) and (iii)
871.The role of nasal cavity in human respiratory system
(i) Filtration of inhaled air.
(ii) Removal of germs and dust.
(iii) Moistening ofthe inhaled air.
(a)(i) &(ii)
(b)(ii) & (iii)
(c)(i), (ii) & (iii)
(d) None of these
872.. Assertion:Althoughbile juicehas nodigestiveenzymes itis still consideredto bevery important during
digestion offood
Reason: Bile provide alkaline medium and emulsifies fat.
(a) BoththeAssertionandtheReasonarecorrect andtheReasonis thecorrectexplanation ofthe
Assertion.
(b) TheAssertionandtheReasonarecorrectbuttheReasonisnotthecorrectexplanation ofthe
Assertion.
(c) AssertionistruebuttheReasonisfalse.
(d)AssertionisfalsebuttheReasonistrue.
873.. Assertion:Herbivores have longer small intestine as compared to Carnivores
Reason: Food takes more time to digest in Carnivore
(a) Both the Assertion andtheReason arecorrect and theReason is thecorrect explanation ofthe
Assertion.
(b) TheAssertion and the Reason arecorrect buttheReason is notthe correct explanation ofthe
Assertion.
(c) Assertion is true but the Reason is false.
(d) Assertion is false but the Reason is true.
874. Assertion: Haemoglobin contentis more in the children than the adult.
Reason: Children have higher metabolic rate and growth rate than the adults.
(a) Both the Assertion andtheReason arecorrect and theReason is thecorrect explanation ofthe
Assertion.
(b) TheAssertion and the Reason arecorrect buttheReason is notthe correct explanation ofthe
Assertion.
(c) Assertion is true but the Reason is false.
(d) Assertion is false but the Reason is true.
Amoeba is an animal having no fixed shape.Itingests food particles by formation
oftemporaryfinger‐likeprojections.Thefoodvacouleinsideamoebabreaksdown
the food into small and soluble molecules.
The digested food is thrownout by the amoeba by the rupture of cell membrane and it goes on forthe
search of next food particle.
875..Amoeba belongs to which group of microorganisms?
(1) Fungi
(2) Bacteria
(3) Protozoa(4) Virus
876. What are the temporary projections made in amoeba called?
(1) Walking legs
(2) Limbs
(3) Pseudopodia
(4)None ofthe above
877.What type of nutrition is followed by amoeba?
(1) Parasitic
(2) Holozoic
(3) Saphrotrophic
(4) Autotrophic
878. The process of throwing out of undigested food in Amoeba is called
(1) Egestion
(2) Digestion
(3) Nutrition
(4) None of the above
879. Give an example of organism which follows same mode of nutrition in amoeba.
(1) Vertebrates
(2) Fungi
(3) Tapeworms
(4) Cuscuta plants
Mostliving things need oxygen to obtain energy from food. The oxygen reacts with food molecules and
thatis how energy is obtained which is stored in the form of ATP molecules in the cells. This energy can
be usedanywhere thebodywants todoso.Theprocess ofreleasingenergy fromfoodis called
respiration.
880.. What is the full form of ATP?
(1) Adenisyne tri‐phosphate
(2) Adenosine tri‐phosphate
(3) Adenosine tetraphosphate
(4) Adenosine monophosphate
Q2. Respirationis
(1) Catabolic process
(2) Anabolic process
(3) Physical process
(4) Biophysical process
881. Respiration is the process in which‐
(1) Energy is released and stored in the form of ATP
(2) Energy is stored in the form of ADP
(3) Energy is not released at all
(4) Energy is used up
882. The form of energy used in respiration is ‐
(1) Electricalenergy
(2) Chemical energy
(3) Mechanical energy
(4) Radiant energy
883.. How many types of respiration are there?
(1) 1
(2) 3
(3) 2
(4) None of the above
Reason : There is no CO2 release during day.
748 Assertion : Lungs always contain a residual volume of air.
Reason : It provides sufficient time for oxygen to be absorbed and for carbon dioxide to be
released.
749Assertion : Transpiration is a necessary evil.
Reason : It causes water loss but helps in absorption and upward movement of water and
minerals.
750.Assertion : During physiology of excretion, deamination does not take place in liver.
Reason : Deamination is a process to make use of excess of amino acids which cannot be
incorporated into protoplasm.
751. Assertion : The muscular walls of ventricles are thicker than auricles.
Reason : This helps in preventing the back flow of blood
752.Assertion : The wall off stomach possess thick layers of muscles.
Reason : These muscles help in mixing the food with the enzymes presents in the alimentary
753.Assertion : The release of energy in aerobic process is much more than in anaerobic process.
Reason : Each glucose molecule produces 2 molecules of ATP and 38 molecules of ATP in
aerobic respiration.
754. Assertion : Lipases help in emulsification of fats.
Reason : Lipases hydrolyses fats
755.. Assertion : Bile is essential for digestion of lipids.
Reason : Bile juice contains enzymes.
756.Which of the following structures is involved in gaseous exchange in woody stem of a plant?
(a) Stomata
(b) Lenticel
(c) Hydathode
(d) Epidermi
757.The air consist of 78% Nitrogen . Choose the forms in which most plants absorb nitrogen:
1. Proteins
2. Nitrates and nitrites
3. Urea
4. Atmospheric nitrogen
758. Choose the correct option.
(a) 1 and 2
(b) 2 and 3
(c) 3 and 4
(d) 1 and 4
759. Only two of the following Statements accurately describe what happens in the mouth.
1. Amylase breaks down large starch molecules into smaller maltose molecules.
2. Chewing increases the surface area of food for digestion.
3. Saliva emulsifies fats into smaller droplets.
4. Teeth breakup large insoluble molecules into smaller soluble molecules
which statements are correct?
(a) 1 and 2
(b) 2 and 3
(c) 3 and 4
(d) 1 and 4
760..Lack of qxygen in muscle often leads to cramps among Athletes . This results due to :
(a) conversion of Pyruvate to Ethanol
(b) conversion of Pyruvate to Glucose
(c) conversion of Glucose to Pyruvate
(d) conversion of Pyruvate to Lactic acid
761.What is the correct route for blood flow in a human?
(a) Left atrium " Left ventricle " Lungs " Right ventricle " Right atrium
(b) Left atrium"Left ventricle "Right ventricle "
Right atrium " Lungs
(c) Right atrium"Right ventricle "Left ventricle
" Left atrium " Lungs
(d) Right atrium "Right ventricle "Lungs "Left atrium " Left ventricle
762. Which of these is not required for photosynthesis?
a. Water b. Oxygen c. Sunlight d. Carbon dioxide
2. The mode of nutrition in Cuscuta is
a. saprophytic b. parasitic c. holozoic d. autotrophic.
3. Paramecium captures food with the help of
a. tentacles b. cilia c. teeth d. pseudopodia.
4. Which raw material is responsible for release of molecular oxygen during photosynthesis?
a. Carbon dioxide b. Glucose c. Water d. Chlorophyll
763.The cellular energy reserve in heterotrophs is
a. glycogen b. starch c. fatty acid d. protein.
764.The largest gland associated with human alimentary canal is
a. adrenal gland b. pancreas c. salivary gland d. liver.
765.Which of the following is mainly digested in stomach?
a. Carbohydrate b. Protein c. Lipids d. Both (a) and (b).
766. The process by which digested food passes through the intestinal wall into blood stream is known as
a. assimilation b. absorption c. egestion d. excretion.
767.Amoeba ingests food by the process of
a. dialysis b. cytokinesis c. phagocytosis d. amoebiasis.
768.While carrying the starch test on leaf, it is essential to boil the leaf in a water bath with alcohol to
a. remove chlorophyll from the leaves b. remove starch from the leaf
c. make the cell more permeable to iodine d. stop all chemical reactions in the cell.
769. In stomach, hydrochloric acid creates an acidic medium so that
a. enzyme trypsin digests the protein b. enzyme pepsin digests the starch
c. enzyme pepsin digests the protein d. enzyme trypsin digests the starch.
770. Which of the following enzyme is present in bile?
a. Lipase b. Trypsin c. Pepsin d. None of these
771. In humans the process of digestion begins in the
a. mouth b. pharynx c. stomach
772. Large intestine in man carries out
a. absorption b. assimilation c. digestion of fat d. digestion of protein.
773. The light reaction of photosynthesis takes place in the
a. stroma of chloroplast b. grana of chloroplast c. matrix of mitochondria d. cytoplasm of leaf cell.
774.. What are the end products of light reaction of photosynthesis?
a. Glucose and ATP b. Glucose and oxygen c. ATP, NADPH and O2 d. ATP, H2 and O2
775.The inner lining of stomach is protected from harmful effect of hydrochloric acid by one of the following
a. Mucus b. Pepsin c. Trypsin d. Bile
776.Which of the following component of our food is digested by an enzyme which is present in saliva as well as in
pancreatic juice?
a. Lipid b. Protein c. Carbohydrate d. Fat
777.The opening and closing of stomatal pores depends upon
a. temperature b. concentration of carbon dioxide in guard cell
c. concentration of oxygen in guard cell d. change in turgidity of the guard cell.
778.The first enzyme to mix with food in the digestive tract is
a. pepsin b. trypsin c. amylase d. lipase.
779. Which of the following does not occur in photosynthesis?
a. Conversion of light energy to chemical energy b. Oxidation of carbon dioxide to glucose
c. Photolysis of water d. Absorption of light
energy by chlorophyll
780.. In which of the following groups of organisms, the food is broken down outside the body and then absorbed?
a. Yeast, Blue green algae, Mushroom b. Amoeba, Paramecium, Euglena
c. Cuscuta, Mushroom, Rhizopus d. Yeast, Mushroom, Rhizopus
781. Emulsification of fat is done by
a. pepsin enzyme b. pancreatic lipase c. intestinal lipase d. bile juice.
782.The longest part of alimentary canal is
a. large intestine b. small intestine c. oesophagus d. stomach.
783.Pancreatic juice contain enzymes which digest
a. Carbohydrate and protein b. Carbohydrate and lipid
c. Lipid and protein d. Carbohydrate, Lipid and protein
784.In which form do plants absorb nitrogen?
a. Atmospheric nitrogen b. Urea c. Nitrites and nitrates d. Uric acid
785. The exit of faecal matter from our body is regulated by
a. anal sphincter b. rectum c. colon d. caecum.
786.. Which type of medium is required for proper functioning of pancreatic juice?
a. Acidic b. Alkaline c. Neutral d. Both (a) and (c)
787.In Amoeba, digestion of food takes place in
a. food vacuole b. cytoplasm c. contractile vacuole d. mitochondria.
788.Which of the following enzyme requires acidic medium?
a. Salivary amylase b. Pancreatic lipase c. Pepsin
789.Gaseous exchange in fish takes place through
a skin b. tracheae c. gills d. lungs.
790. Aerobic respiration takes place in the
a. cytoplasm b. mitochondria c. vacuole d. nucleus.
791.The end products of fermentation of glucose by yeast are
a. ethanol, CO2 and 36 ATP b. CO2, H2O and 36 ATP
c. ethanol, CO2 and 2ATP d. lactic acid, CO2 and 2 ATP.
792. The passage of air during inhalation is
a. pharynx → nasal cavity → larynx → trachea bronchi → bronchioles
b. nasal cavity → pharynx → larynx → trachea → bronchi → bronchioles
c. larynx → nasal cavity’ → pharynx → trachea → bronchioles → alveoli
d. larynx → pharynx → trachea → alveoli → bronchioles.
793 Exchange of gases in woody stem occurs through
a. stomata b. lenticels c. cork d. epidermis.
794.. Pyruvic acid is converted to lactic acid in the of muscle cells.
a. cytoplasm b. mitochondria c. Golgi body d. none of these
795.The energy rich compound produced during respiration is
a. AMP b. ADP c. ATP d. pyruvate.
796.. The common stage between aerobic and anaerobic respiration is
a. reduction b. glycolysis c. Kreb’s cycle d. oxidation.
797. Which of the following prevents the collapse of air passage?
a. Diaphragm b. Rings of cartilage c. Larynx d. Alveoli
798. Which of the following is not a characteristic of respiratory organ?
a. Large surface area b. Richly supplied with blood capillaries
c. Thick and dry surface d. Thin and delicate surface
799.. Glottis opens on the floor of
a. pharynx b. trachea c. diaphragm d. oesophagus.
800. The biochemical compound that readily combines with oxygen and distributes it throughout the human body is
a. urea b. blood plasma c. haemoglobin d. insulin.
801.. Residual volume of air in lungs
a. helps in inhalation b. allows continuous gases exchange between breathing
c. helps in exhalation d. depletes oxygen from lungs.
802. Which of the following is not a correct statement regarding trachea?
a. It splits into right and left bronchi to supply air to lungs
b. Tracheal rings are C shaped
c. Opening of trachea is covered with ep
803. Which of the following is correct regarding exhalation?
a. Diaphragm is relaxed b. Rib cage lifts up
c. Volume of thoracic cavity increases d. Pressure on the lung decreases
804.Which of these are anaerobes?
a. Yeast, Amoeba b. Yeast, bacteria c. Yeast, algae d. Yeast, blue green algae
805.The direction of diffusion of gases in plants depends upon
a. environmental conditions b. requirement of the plants
c. both (a) and (b) d. none of these.
1806.The rate of breathing is likely to be high in which of the following
a. Mango tree b. Pigeon c. Fish d. Man
807.The end product of glycolysis is
a. lactic acid b. glucose c. ethanol. d. pyruvate.
808. Exchange of gases during respiration takes place at
a. alveoli b. bronchi c. trachea d. nostril.
809.Painful contraction of muscles during heavy physical exercise occur due accumulation of
a) lactose b. ethanol c. pyruvic acid d. lactic acid.
810. Which of the statements are true for respiration?
i. Ribs move inwards and diaphragm is raised during inhalation
ii. Gaseous exchange occurs at alveoli of lungs
iii. Haemoglobin has greater affinity for carbon dioxide than oxygen
iv. Alveoli increases surface area for exchange of gases
a. i. and iv.
b. ii. and iii.
c. i. and iii.
d. ii. and iv.
811.. When air is blown from mouth into a test tube, lime water turns milky due to formation of
a. calcium chloride b. calcium carbonate c. calcium bicarbonate d. calcium hydroxide.
812. Site of glycolysis in cell is
a. mitochondria b. Golgi body c. cytoplasm d. endoplasmic reticulum.
813. In which of following organisms, simple diffusion of gases for breathing and respiration does not occur?
a. Amoeba b. Cockroach c. Paramecium
814.Transport through which of the following is bidirectional
a. Xylem b. Phloem c. Cambium d. Both (a) and (b)
815 Which of the following is not an element of phloem?
a. Sieve tube b. Tracheids c. Companion cell d. Parenchyma
816.. Nucleus is absent in
a. RBC b. Sieve tube c. Companion cell d. both (a) and (b)
817. The process of transport of food from leaves to other parts of the plant is known as
a. Transportation b. Transpiration c. Translocation d. Transformation
818.Valves are absent in
a. Capillaries b. Veins c. Arteries d. Both (a) and (c)
819.Instrument used to measure blood pressure is
a. Manometer b. Barometer c. Sphygmomanometer d. Stethoscope
820 Normal systolic to diastolic blood pressure is
a. 120/80 mm of mercury b. 120/180 mm of mercury
c. 80/120 mm of mercury d. 180/120 mm of mercury
821.Oxygenated blood reaches heart through
a. Pulmonary vein b. Pulmonary artery c. Vena cava d. Aorta
822. The exchange of material between blood and surrounding cells occur at
a. Heart b. Veins c. Arteries d. Capillaries
823.. Which of the following is not true for plants?
a. Slow transport system b. High energy needs
c. Not mobile d. Large number of dead cells
824 Which of the following is responsible for transport of water in herbaceous plants?
a. Transpiration pull b. Root pressure c. Capillary force d. All the above
825. The blood vessel which carries deoxygenated blood to lungs is
a. Pulmonary artery b. Pulmonary vein c. Aorta d. Vena cava
826 Which of the following has three chambered heart?
a. Sparrow b. fish c. crocodile d. frog
827.Which of the following statements are not true regarding translocation in plants?
i. It transports food in the form of sugar
ii. It requires energy in the form of ATP
iii. It transports food in the form of glucose
iv. It is a passive process
a. i. and iv.
b. ii. and iv.
c. i. and ii.
d. iii. and iv.
828. Which chamber of the heart receives oxygenated blood?
a. Right atrium b. Left atrium c. Right ventricle d. Left ventricle
829.The main function of lymph is to
a. transport digested fat b. return extracellular fluid back to blood
c. destroy bacteria and foreign particles d. all of these.
830.Four chambered heart
a. Prevents mixing of oxygenated and deoxygenated blood
b. Allows mixing of oxygenated and deoxygenated blood
c. Is found in cold blooded animals
d. None of the above.m
831.Deoxygenated blood is pumped to all parts of the body in
a. Frog b. Pigeon c. Fish d. Man
832.Single blood circulation is seen in
a. Shark b. Whale c. Bat d. Frog
833. Heart is protected by a double layered protective covering called
a. Pleura b. Pericardium c. Meninges d. Thorax
834.. Thrombocyte helps to
a. Transport oxygen b. Fight infection c. Clot blood d. None of the above
835.Which of the following statements are true for human heart?
i. Walls of ventricle are thicker than walls of atrium
ii. Left atrium receives oxygenated blood through pulmonary vein
iii. Right ventricle receives deoxygenated blood through vena cava
iv. Right atrium receives oxygenated blood through vena cava
a. i. and ii.
b. ii. and iii.
c. i. and iv.
d. ii. and iv.
836. Transpiration helps in
a. Translocation b. Transport of water c. Photosynthesis d. Root pressure
837.. Walls of arteries are
a. Thick and elastic b. Thin and permeable c. Thick and inelastic d. Thin and impermeable
838.. The blood leaving the tissues become richer in
a. Oxygen b. Haemoglobin c. Carbon dioxide d. Urea
839. The basic functional unit of kidney is
a. nephron b. neuron c. nephridia d. cilia.
840. Bunch of capillaries in the Bowman’s capsule is
a. nephric capillaries b. Glisson’s capsule c. glomerulus d. Malpighian capsule.
841.Which blood vessel contains less nitrogenous waste?
a. Renal artery b. Renal capillaries c. Renal vein d. Renal arteriole
842.The process of removing nitrogenous waste from the blood of a person is known as
a. hydrolysis b. haemolysis c. haemodialysis d. electrolysis.
843.Which of the following is reabsorbed in the blood during urine formation?
a. Water b. Glucose c. Amino acid d. All of these
844. Which one of the following is not a part of nephron?
a. Nephric tubule b. Ureter c. Bowman’s capsule d. Both (a) and (c)
845. Amoeba excretes through
a. contractile vacuole b. food vacuole c. nephridia d. kidney.
846 The function of kidney is
a. excretion b. osmoregulation c. both (a) and (b) d. none of these.
847.. The waste material in plants is
a. carbon dioxide b. oxygen c. resins and gums d. all of these.
848. Plants excrete waste materials through
a. old xylem b. old leaves c. stomata and lenticels d. all of these.
849.. The human kidney excretes nitrogenous waste majorly in the form of
a. ammonia b. amino acid c. uric acid d. urea
.
850.. The dialysing solution lack
a. glucose b. water c. urea d. salts.
851.Plant cell store waste in the
a. vacuole b. cytoplasm c. lysosome d. chloroplast.
852.The nephrons discharge their content in the
a. ureter b. urinary bladder c. collecting duct d. Bowman’s capsule.
853. Urinary bladder is under control.
a. endocrine b. nervous c. hormonal d. all of these
854.Which of the following acts as dialysis bag in human kidney?
a. Nephric tubule b. Glomerulus c. Collecting duct d. Urinary bladder
855.The amount of water reabsorbed from nephric tubule depend upon
a. The amount of soluble waste to be removed from blood
b. The amount of water present in blood
c. The length of the nephron
d. Both (a) and (b)
856.Which of the following statements regarding human kidney are incorrect?
i. Kidney is bean shaped
ii. It has 1000 nephrons
iii. Right kidney is slightly lower than left kidney
iv. Left kidney is slightly lower than right kidney
a. i. and iii.
b. ii. and iv.
c. ii. and iii.
d. iii. None of the above
857. The cup shaped part of nephron is called
a. glomerulus b. Malpighian Body c. Bowman’s capsule d. all of these.
858.Which one of the following is not reabsorbed from the primary filtrate?
a. Amino acid b. Urea c. Water d. Glucose
859.. Urine is stored in before they are passed out of the body.
a. kidney b. ureter c. urethra d. urinary bladder
860 Nephrons are
a. functional unit of excretory system b. functional unit of nervous system
c. functional unit of kidney d. none of these.
861. Name the organs that make up the excretory system in humans.
a. Two kidneys b. Two ureters c. Bladder and urethra d. All of these
862. The principal nitrogenous excretory compound in humans is synthesized in the
a. liver b. kidney c. blood d. spleen.
863. The muscular tube which carries urine from kidney to urinary bladder is
a. urethra b. ureter c. collecting duct d. nephric tubule.
864..Inwhichofthefollowinggroupsoforganisms,foodmaterialisbrokendownoutsidethebodyand
absorbed?
(a) Mushroom, green plants, Amoeba
(b) Yeast, mushroom, bread mould
(c) Paramecium, Amoeba,Cuscuta
(d) Cuscuta, lice,tapeworm
865..salivaryamylaseislackinginthesaliva,whichofthefollowingeventsinthemouthcavitywillbe
affected?
(a) Proteins breaking down into amino acids
(b) Starch breaking down into sugars
(c) Fats breaking down into fatty acids and glycerol
(d) Absorption of vitamins
866.Afewdrops ofiodine solutionwere added to ricewater. The solution turned blue‐black in colour.
This indicates that rice water contains
(a) complex proteins
(b) simple proteins
(c) fats
(d) starch
867.The procedure used for cleaning the blood of a person by separating urea from itis called:
(a) osmosis
(b) filtration
(c) dialysis
(d) double circulation
868. How is the circulations of blood in fish different from thatin humans?
(a) The heart in fish is bigger in size.
(b) The flow of blood in fish is unidirectional.
(c) The blood goes through heart only once in fishes.
(d) The heart of fish has more chambers compared to that of a human.
869.. In the experiment given here water will rise in the tube because
1. Which ofthe following statement(s) is (are)true about respiration?
(i) During inhalation, ribs move inward and diaphragm is raised
(ii) In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and
carbon dioxide from the blood into the alveolar air
(iii) Haemoglobin has a greater affinity for carbon dioxide than oxygen
(iv) Alveoli increase surface area for exchange of gases
(a) (i) and (iv)
(b) (ii) and (iii)
(c) (i) and (iii)
(d) (ii) and (iv)
870.Which ofthe following statement(s) is (are)true aboutthe heart?
(i) The left atrium receives oxygenated blood from different parts of the body while the right atrium
receives deoxygenated blood from lungs.
(ii) Left ventricle pumps oxygenated blood to different body parts while right ventricle pumps
deoxygenated blood to lungs.
(iii) Leftatriumtransfersoxygenatedbloodtotherightventriclewhichsends ittodifferentbodyparts.
(iv) The right atrium receives deoxygenated blood from different parts of the body while the left
ventricle pumps oxygenated blood to different parts ofthe body.
(a) (i)
(b) (ii)
(c) (ii) and(iv)
(d) (i) and (iii)
871.The role of nasal cavity in human respiratory system
(i) Filtration of inhaled air.
(ii) Removal of germs and dust.
(iii) Moistening ofthe inhaled air.
(a)(i) &(ii)
(b)(ii) & (iii)
(c)(i), (ii) & (iii)
(d) None of these
872.. Assertion:Althoughbile juicehas nodigestiveenzymes itis still consideredto bevery important during
digestion offood
Reason: Bile provide alkaline medium and emulsifies fat.
(a) BoththeAssertionandtheReasonarecorrect andtheReasonis thecorrectexplanation ofthe
Assertion.
(b) TheAssertionandtheReasonarecorrectbuttheReasonisnotthecorrectexplanation ofthe
Assertion.
(c) AssertionistruebuttheReasonisfalse.
(d)AssertionisfalsebuttheReasonistrue.
873.. Assertion:Herbivores have longer small intestine as compared to Carnivores
Reason: Food takes more time to digest in Carnivore
(a) Both the Assertion andtheReason arecorrect and theReason is thecorrect explanation ofthe
Assertion.
(b) TheAssertion and the Reason arecorrect buttheReason is notthe correct explanation ofthe
Assertion.
(c) Assertion is true but the Reason is false.
(d) Assertion is false but the Reason is true.
874. Assertion: Haemoglobin contentis more in the children than the adult.
Reason: Children have higher metabolic rate and growth rate than the adults.
(a) Both the Assertion andtheReason arecorrect and theReason is thecorrect explanation ofthe
Assertion.
(b) TheAssertion and the Reason arecorrect buttheReason is notthe correct explanation ofthe
Assertion.
(c) Assertion is true but the Reason is false.
(d) Assertion is false but the Reason is true.
Amoeba is an animal having no fixed shape.Itingests food particles by formation
oftemporaryfinger‐likeprojections.Thefoodvacouleinsideamoebabreaksdown
the food into small and soluble molecules.
The digested food is thrownout by the amoeba by the rupture of cell membrane and it goes on forthe
search of next food particle.
875..Amoeba belongs to which group of microorganisms?
(1) Fungi
(2) Bacteria
(3) Protozoa(4) Virus
876. What are the temporary projections made in amoeba called?
(1) Walking legs
(2) Limbs
(3) Pseudopodia
(4)None ofthe above
877.What type of nutrition is followed by amoeba?
(1) Parasitic
(2) Holozoic
(3) Saphrotrophic
(4) Autotrophic
878. The process of throwing out of undigested food in Amoeba is called
(1) Egestion
(2) Digestion
(3) Nutrition
(4) None of the above
879. Give an example of organism which follows same mode of nutrition in amoeba.
(1) Vertebrates
(2) Fungi
(3) Tapeworms
(4) Cuscuta plants
Mostliving things need oxygen to obtain energy from food. The oxygen reacts with food molecules and
thatis how energy is obtained which is stored in the form of ATP molecules in the cells. This energy can
be usedanywhere thebodywants todoso.Theprocess ofreleasingenergy fromfoodis called
respiration.
880.. What is the full form of ATP?
(1) Adenisyne tri‐phosphate
(2) Adenosine tri‐phosphate
(3) Adenosine tetraphosphate
(4) Adenosine monophosphate
Q2. Respirationis
(1) Catabolic process
(2) Anabolic process
(3) Physical process
(4) Biophysical process
881. Respiration is the process in which‐
(1) Energy is released and stored in the form of ATP
(2) Energy is stored in the form of ADP
(3) Energy is not released at all
(4) Energy is used up
882. The form of energy used in respiration is ‐
(1) Electricalenergy
(2) Chemical energy
(3) Mechanical energy
(4) Radiant energy
883.. How many types of respiration are there?
(1) 1
(2) 3
(3) 2
(4) None of the above
885. While preparing a temporary stained mount of a leaf epidermal peel, the extra stain is
removed by:
A. washing with water
B. washing with calcium chloride solution
C. soaking with blotting paper
D. absorbing with cotton wool
886.. Mahi has two aquatic plants of the same size and species. She submerges each plant in
a separate beaker filled with 200 ml of water. She then sets each beaker under light bulbs of
different intensity. Mahi observes that plant 2 kept under more intense light gives off more gas
bubbles in a 20 min period than plant 1 which is kept under less intense light.
Which of the following statements best explains Mahi's observations?
A. Photosynthesis occurs at a higher rate in plant 1 than plant 2.
B. Photosynthesis occurs at a higher rate in plant 2 than plant 1.
C. Photosynthesis occurs at the same rate in both plant 1 and plant 2.
D. Photosynthesis does not occur in aquatic plants, only cellular respiration occurs
887.Which of the following are examples of respiration?
1. Humans use oxygen and release carbon dioxide.
2. Plants use carbon dioxide and release oxygen.
3. Dry leaves burn and use oxygen and release carbon dioxide.
A) only 1 B) only 2 C) only 1 and 2 D) 1, 2 and 3
888. Stomata are tiny pores on the surface of the leaves__________.
A. through which water is taken in
B. through which sunlight is taken in
C. which produces the pigment chlorophyll
D. through which carbon dioxide is taken in
889.Four friends were discussing why our body requires food and why we need to eat. Here
is what they said.
Sam: "We need food only because we get hungry."
Mike: "We need food only to get energy from it."
Jill: "The only reason we eat food is that it helps us to grow."
John: "We need to eat food for energy as well as to grow."
Whose statement BEST explains why we need to eat food?
A. Sam B. Mike C. Jill D. John
890.Amoeba is a microscopic single-celled organism whose food capturing organs are
A.pseudopodia
B.cilia
C.flagella
D.tentaclea
881.We inhale air. This air contains oxygen, which is necessary to carry out the process of
respiration. In which of these organs is oxygen separated from the inhaled air?
A. nose B. lungs C. heart D. oesophagus
882.The intestinal wall is richly supplied with blood vessels so that_______________.
A. the absorbed food can be transported to the rest of the body
B. the energy released by the process of digestion can be absorbed
C. the carbon dioxide in the intestine released can be removed faster
D. the blood can mix with the food inside it and carry away the nutrients and wastes
883. Which of these is/are main functions of saliva?
P. to digest starch present in the food
Q. to moisten the food for easy swallowing
R. to quench thirst
A. only P B. only Q C. only P and Q D. only Q and R
884.THREE friends were discussing the function of the tongue. This is what they said.
Shashank: "The tongue moves the food around the mouth so that we can chew it
better."
Anita: "The tongue helps us taste the food."
Radha: "The tongue breaks down large food pieces to smaller ones."
Who is correct?
A. only Shashank B. only Anita
C. only Shashank and Anita D. all - Shashank, Anita and Radha
885. 3 friends were discussing the function of the tongue. This is what they said.
Shashank: "The tongue moves the food around the mouth so that we can chew it
better."
Anita: "The tongue helps us taste the food."
Radha: "The tongue breaks down large food pieces to smaller ones."
Who is correct?
A. only Shashank B. only Anita
C. only Shashank and Anita D. all - Shashank, Anita and Radha
886. Organisms break down large food molecules to small molecules. How does
this breakdown help the organisms?
A. It releases a lot of energy in the digestive tract that can be used up by the cells.
B. It ensures that there are enough raw materials to produce and supply oxygen to the cells.
C. It converts the large molecules to small molecules that can pass through the cell membrane.
D. It makes sure that the liberation of heat by the breakdown of large molecules does not occur
inside the cell.
887.. Identify the correct order in which food passes from our mouth through our body.
A. mouth, food pipe, anus, stomach, intestine B. mouth, food pipe, intestine, stomach, anus
C. mouth, food pipe, stomach, intestine, anus D. mouth, food pipe, anus, intestine, stomach
888.Which of the following undergoes chemical digestion due to substances secreted by the
wall of the stomach?
A. only fats B. only sugars C. only proteins D. all - fats, sugars and proteins
889.Choose the correct options: The process of excretion involves the removal of -
P. waste products of life processes
Q. excess of substances like water and salts
R. harmful substances that we may have taken in during eating or breathing
A. only P B. only P and Q C. only P and R D. all - P, Q and R
890.Digestion of food starts from which organ of the human digestive system?
A. mouth due to the presence of saliva
B. oesophagus that moves the food in gut
C. that releases juices for fat breakdown
D. which helps in mixing food with digestive juices
891.The image shows the transport of gases in the body through the heart and lungs.
Which option correctly shows the transport of oxygen to the cell?
(a) Lungs →pulmonary vein →left atrium →left ventricle →aorta → body cells
(b) Lungs →pulmonary vein →right atrium →right ventricle → aorta → body cells
(c) Lungs →pulmonary artery →left atrium → left ventricle → vena cava → body cells
(d) Lungs →pulmonary artery →right atrium → right ventricle→ vena cava → body cell
892.How is food transported from phloem to the tissues according to plants’ needs?
(a) food is transported along with the water in the plant’s body.
(b) food is transported in only direction like water in the plant body through xylem.
(c) food is transported from a region with low concentration to higher concentration.
(d) food is transported from a region where it is produced to other parts of the plants.
893.A few drops of iodine solution were added to rice water. The solution turned blue‐black in
colour. This indicates that rice water contains
A. complex proteins B. simple proteins C. fat
894. Carefully study the diagram of the human respiratory system with labels A, B, C and D.
Select the option which gives correct identification and main function and /or characteristic.
A. (i) Trachea: It is supported by bony rings for conducting
inspired air.
B. (ii) Ribs: When we breathe out, ribs are lifted.
C. (iii) Alveoli: Thin-walled sac like structures for exchange
of gases.
D. (iv) Diaphragm: It is pulled up when we breathe in.
895.What is the percentage of the oxygen in the expired air when a person is resting:
A. 12% B. 16% C. 20% D. 24%
896. Identify the option that indicates the correct enzyme that is secreted in location A, B and C.
A. (i)-lipase, (ii)-trypsin, (iii)-pepsin
B. (i)-amylase, (ii)-pepsin, (iii)-trypsin
C. (i)-trypsin, (ii)-amylase, (iii)-carboxylase
D. (i)-permease, (ii)-carboxylase, (iii)-oxidase
898.Opening and closing of stomatal pore depends on:
A. Atmospheric temperature
B. oxygen concentration around stomata
C. carbon dioxide concentration around stomata
D. water content in the guard cells
899.The chlorophyll in photosynthesis is used for
A. Absorbing light
B. Breaking down water molecule
C. No function
D. Reduction of CO2
900.The figure given below shows a schematic plan of blood circulation in
humans with labels (i) to (iv). Identify the correct label with its functions?
A. (i) Pulmonary vein - takes impure blood from body part.
B. (ii) Pulmonary artery - takes blood from lung to heart.
C. (iii) Aorta - takes blood from heart to body parts.
D. (iv) Vena cava takes - blood from body parts to right auricle.
901.Assertion: Resins and gums are stored in old xylem tissue in plants.
Reason: Resins and gums facilitate transport of water molecules.
902.Assertion: In the day time, CO2 generated during respiration is used up for
photosynthesis.
Reason: There is no CO2 release during day.
903.Assertion: The main organ of human excretory system is kidney.
Reason: Kidney perform the function of removing excess water and nitrogenous wastes
from the body.
904.Assertion: Molecular movements are needed for life.
Reason: Body structures made up of these molecules need continuous repair and
maintenance.
905.Identify the phase of circulation which is represented in the diagram of heart given below.
Arrows indicate contraction of the chambers shown.
A. Blood transferred to the right ventricle and left ventricle
simultaneously.
B. Blood is transferred to lungs for oxygenation and is pumped into
various organs simultaneously.
C. Blood transferred to the right auricle and left auricle
simultaneously.
D. Blood is received from lungs after oxygenation and is received from
various organs of the body
906. Carbohydrates in the plants are stored in the form of
A. Glycogen B. Starch C. Glucose D. Maltose
38Q. Select the option which gives correct function and /or characteristic: of the four parts of
human respiratory system.
A. Alveoli: Thin-walled sac like structures for exchange of gases.
B. Diaphragm: It is pulled up when we breathe in.
C. Trachea: It is supported by bony rings for conducting inspired air.
D. Ribs: When we breathe out, ribs are lifted.
907. Photosynthesis is a
A. Catabolic process B. Parabolic process
C. Amphibolic process D. Photochemical process
908.Which element is used in the synthesis of proteins?
A. Hydrogen B. Oxygen C. Nitrogen D. Carbon dioxide
909.Given below are the functions of some parts of human circulatory system. Identify the
correct match.
A. Pulmonary vein – takes oxygenated blood from body parts to heart
B. Artery – takes oxygenated blood from heart to lung
C. Dorsal aorta – takes deoxygenated blood from heart to body parts
D. Vena cava – takes deoxygenated blood from body parts to right atrium
910.The image shows the structure of a nephron.
Nephron is a unit of filtration in kidneys that filters
waste material. It selectively reabsorbs or excretes
water with the help of capillaries that surround it.
What is the likely benefit of this?
A. It makes the process of filtration at Bowman’s
capsule easier
B. It helps keep the output of urine constant
throughout the day
C. It helps to uptake and store excess amount of
water in the body for later use
D. It maintains the concentration of urine based on the amount of water present in the body
911 The light-yellow colour of a liquid, present in urinary bladder, having pH 6 is due to the
presence of
A. Haemoglobin B. Urochrome C. Xanthophyll D. None of these
912. The image shows the flow diagram for the breakdown
of glucose in yeast. Under which condition
these types of products are obtained?
A. in the presence of oxygen
B. in the absence of oxygen
C. the presence of carbon dioxide
D. in the absence of carbon dioxide
913.A student sets up an experiment
to study the photosynthesis in plants.
The student destarched a potted plant
by keeping it in a dark room for 3 days.
Half of the portion of destarched leaf
was placed in a bottle containing
caustic potash (absorbs CO2) as shown.
The student then places the plant in
light and tests the leaf after 5 hours for
the presence of starch. The portions
inside the bottle shows negative starch
test by reflecting no change in colour
when react with iodine, however, other upper portions of the leaf gave positive starch test
showing blue-black colour with iodine. What can be evaluated from this experiment?
A. carbon dioxide is directly linked with the colour of leaf
B. carbon dioxide is necessary for preparing carbohydrate
C. lack of carbon dioxide increases amount of starch in plant
D. lack of carbon dioxide slows the process of photosynthesis
914.Correct sequence of urine formation is
A. filtration, reabsorption, collection B. secretion, reabsorption, filtration
C. reabsorption, filtration, collection D. secretion, reabsorption, collection
915.What happens when right and left ventricle contract during pumping of blood by human
Heart?
A. Blood transferred to the right ventricle and left ventricle simultaneously.
B. Blood is transferred to lungs for oxygenation and is pumped into various organs simultaneously.
C. Blood transferred to the right atrium and left atrium simultaneously.
D. Blood is received from lungs after oxygenation and is received from various organs of the body.
Digestion is a catabolic process in which complex and large components of food are
broken down into their respective simpler and smaller forms with the help of various
hydrolytic enzymes. In human, the process of intake of essential nutrients in the form of
food takes place through an entire system known as digestive system. The digestive
system in human includes alimentary canal and its associated digestive glands.
916.dentify the cells whose secretion protects the lining of gastro-intestinal tract from
various enzymes.
A. Duodenal cells B. Chief cells C. Goblet cells D. Oxyntic cells
917 Digestion of proteins is incomplete in the absence of enterokinase, because
A. trypsinogen is not converted into trypsin
B. pepsinogen is not converted into pepsin
C. prorenin is not converted into rennin
D. chymotrypsinogen is not converted into chymotrypsin
918.. Match the column I with column II and column III. Choose the correct option.
Column I Column II Column III
(Substrate) (Enzyme) (Product)
1. Lactose A. Lipase I. Galactose
2. Fatty acid B. Trypsin II. Maltose
3. Starch C. Lactase III. Glycerol
4. Proteins D. Amylase IV. Dipeptides
A. 1 - A - I; 2 - C - II; 3 - B - III; 4 - D - IV
B. 1 - D - I; 2 - A - II; 3 - B - III; 4 - C - IV
C. 1 - C - I; 2 - A - III; 3 - D - II; 4 - B - IV
D. 1 - C - I; 2 - A - II; 3 - D - III; 4 - B – IV
Read the following and answer any four questions from
The Figure shown below represents an activity to prove the requirements for photosynthesis.
During this activity, two healthy potted plants were kept in the dark for 72 hours. After 72
hours, KOH is kept in the watch glass in setup ‘a’ and not in setup ‘b’. Both these setups are air
tight and have been kept in light for 6 hours. Then, Iodine Test is performed with one leaf from
each of the two plants ‘a’ and ‘b’.
919.This experimental set up is used to prove essentiality of which of the following
requirements of photosynthesis?
A. Chlorophyll B. Oxygen C. Carbon dioxide D. Sunlight
920.The function of KOH is to absorb
A. Oxygen. B. Carbon dioxide. C. Moisture. D. Sunlight.
921.Which of the following statements shows the correct results of Iodine Test performed on
the leaf from plant ‘a’ and ‘b’ respectively?
A. Blue - black colour would be obtained on the leaf of plant Xand no change in colour on leaf of plant Y.
B. Blue - black colour would be obtained on the leaf of plant Y and no change in colour on leaf of plant X.
C. Red colour would be obtained on the leaf of plant X and brown colour on the leaf of plant Y.
D. Red colour would be obtained on the leaf of plant Y and brown colour on the leaf of plant X
922. Which of the following steps can be followed for making the apparatus air tight?
i. placing the plants on glass plate
ii. using a suction pump.
iii. applying Vaseline to seal the bottom of jar. iv. creating vacuum
A. i and ii B. ii. and iii C. i. and iii D. ii. and iv
Ayush experienced muscular cramps during the training session for his upcoming cricket
match. His coach advised him on a schedule of aerobic exercises to overcome this
problem. Ayush followed his coach's advice and did not experience any muscular cramps
during the game.
923.Lack of oxygen in muscles often leads to cramps due to
A. conversion of pyruvate to ethanol C. non-conversion of glucose to pyruvate
B. conversion of pyruvate to glucose D. conversion of pyruvate to lactic acid
924. Which substances are produced by anaerobic respiration in yeast?
A.ehanol
B.lactic acid
C.carbondioxide
D.energy
925.. The diagram shows an experiment to investigate anaerobic respiration in yeast cell:
What is the purpose of liquid paraffin in tube A?
A. To prevent evaporation
B. To stop air from getting in
C. To stop the temperature from going up
D. To stop water from getting in
926.The indicator colour in tube B changes in the concentration of carbon dioxide if tube B
contains lime water. what will be the colour after sometimes?
A. Milky B. Black C. Yellow
927.all the co2 produced in respiration is used in the morning by plants are used for
A.photosynthesis
B.transpiration.
C.light reaction of photosynthesis
D.dark reaction of photosynthesis
928.dark reaction of photosynthesis means
A.it occurs in dark only.
B it occurs in light only
C it occurs after energy ATP preparation in light reaction
D.it occurs in the evening
930.The process of respiration is concerned with
(A) liberation of oxygen
(B) liberation of carbon dioxide
(C) liberation of energy
(D) intake of oxygen
931.The common immediate source of energy for cellular
activity is
(A) NAD (B) ATP
(C) DNA (D) RNA
932.The tissue respiration refers to
(A) inspiration
(B) external respiration
(C) internal respiration
(D) expiration
933. If the CO2 concentration in the blood increases, the
rate of breathing will
(A) decrease
(B) stop
(C) increase
(D) have no effect
934.Vocal cards occur in
(A) pharynx
(B) glottis
(C) bronchial tube
(D) larynx
935. In man, which of the following structures is
analogous to the spiracles of cockroach ?
(A) Alveoli
(B) Lungs
(C) Bronchioles
(D) Nostrils
936.Which of the following prevents collapsing of
trachea ?
(A) Diaphragm
(B) Ribs
(C) Cartilaginous ring
(D) Muscles
937.Which of the following gases makes the most stable
combination with the hemoglobin of red blood cells.
(A) CO2 (B) CO (C) O2 (D) N2
938.Volume of air inspired or expired with each normal
breath is called
(A) tidal volume
(B) inspiratory capacity
(C) total lung capacity
(D) residual volume
939.Most of the carbon dioxide in the blood is carried in
the form of
(A) carbonic acid
(B) bicarbonates
(C) carbaminohaemoglobin
(D) dissolved CO2
940.Breathing rate in mammals in controlled by a part of
the brain called the
(A) thalamus
(B) hypothalamus
(C) medulla oblongata
(D) cerebellum
941.In anaerobic respiration
(A) O2 is taken in (B) CO2 is taken in
(C) O2 is given out (D) CO2 is given out
942. Disease called pleurisy is due to
(A) inflammation of pleura
(B) inflammation of trachea
(C) inflammation of alveoli
(D) none of these above
943.. Leaves respire with the help of
(A) lenticles
(B) stomata
(C) plasmodesmata
(D) cuticle
944.Correct statement is
(A) roots of plant respire through lenticles and
stomata.
(B) stem of plant respire through lenticles
(C) both A and B are correct
(D) both A and B are incorrect
945. Which of the following is not a characteristic of good respiratory surface ?
(A) Thin and moist
(B) Large surface area
(C) Close to oxygen and gas transport
(D) Thick and dry surface
946.Respiration in yeast
(A) takes place in the presence of oxygen
(B) yields lactic acid and carbon dioxide
(C) in anaerobic and produces carbon dioxide
(D) takes place only in darkness
947. Muscle cells engaged in vigorous activity build up a
high concentration of
(A) lactic acid
(B) pyruvic acid
(C) alcohol
(D) cholesterol
948. Exchange of respiratory gases takes place in an earthworm through
(A) moist skin (B) gills
(C) trachea (D) lungs
949.Oxygen is transported in blood mainly by
(A) leucocytes
(B) erythrocytes
(C) thrombocytes
(D) blood plasma
950.What do you mean by inhalation and exhalation ?
A.takimg I'm co2 and giving out o2
B.taking co2 and giving co2
C.taking 02 and giving co2
D.takung 02 and giving 02
951.Draw a diagram showing human respiratory system.
Label its following parts :
(i) Larynx (ii) Trachea (iii) Primary bronchus (iv)
Lungs
952.Name the respiratory organs in the following :
(i) A fish (ii) A bird (iii) An earthworm
953.Osmosis is the movement of :
(A) solute particles from higher concentration to
lower concentration
(B) solvent particles from higher water potential to
lower water potential through a semi permeable
membrane
(C) solute particles from higher concentration to
lower concentration through a semipermeable
membrane
(D) solvent particles from lower water potential to higher water potential.
954.The ultimate cause for the movement of water
against the gravity in a tree is
(A) osmosis (B) transpiration
(C) imbibitions (D) photosynthesis
955. Which one of the following is connected with
transport of water in plants ?
(A) Phloem (B) Xylem
(C) Epidermis (D) Cambium
956.Which of the following contributes most to transport of water from the ground to the leaves of a tall tree?
(A) Breakdown of ATP
(B) Capillary rise of water is xylem
(C) Cohesion of water and transpiration pull
(D) Root pressure.
957. The process of transpiration in plants helps in
(A) opening of stomata
(B) absorption of CO2 from atmosphere
(C) upward conduction of water and minerals
(D) absorption of O2 from atmosphere
958.. Opening and closing of stomata is due to
(A) pressure of gases inside the leaves
(B) changes of turgor pressure in guard cells
(C) effect of hormones
(D) their genetic constitutio
959. The carbohydrates synthesized in the leaves are transported through sieve tubes most commonly in the form of
(A) glucose (B) starch
(C) sucrose (D) cellulose
960.. In a closed circulatory system, blood is completely enclosed with in
(A) sinuses (B) vessels
(C) heart (D) skeleton
961.An artery is a vessel that carries blood
(A) with high concentration of oxygen
(B) with high concentration of CO2
(C) away from the heart
(D) both A & C
962.. Values are found in veins to check the backflow of
blood flowing under
(A) low pressure
(B) high pressure
(C) no pressure
(D) atmospheric pressure.
963.The phenomena non of uptake of water at the expense of energy by the cells and usually against the osmotic gradient is known as
(A) active absorption
(B) passive absorption
(C) osmosis
(D) diffusion
964. Water will be absorbed by root hair when
(A) concentration of solutes in the cells sap in high
(B) plant in rapidly respiring
(C) they are separated from soil by a permeable
membrane
(D) concentration of salts in the soil in high.
965.Root cap has no role in water absorption because
(A) it has no direct connection with the vascular
system
(B) it has no cells containing chloroplasts
(C) it has no root hairs
(D) it has loosely arranged cells.
966.Which of the following is used in measuring
transpiration ?
(A) Photometer
(B) Cobalt chloride paper
(C) Bell - jar
(D) None of the above
967.Translocation of solutes primarily takes place
through
(A) phloem (B) xylem
(C) cortex (D) pith.
968.A mature human erythrocyte has the typical
characteristic of
(A) a eukaryotic cell
(B) a prokaryotic cell
(C) both eukaryotic and prokaryotic cell
(D) neither eukaryotic nor prokaryotic cell
969.. Removal of calcium from freshly collected blood will
(A) result in clotting
(B) prevent clotting
(C) prevent oxidation of hemoglobin
(D) cause hemolysis
970. In the cardiac cycle, diastole is
(A) the number of heart beats per minute
(B) the relaxation period after contraction of the heart
(C) the forceful pumping action of the heart
(D) the contraction period after relaxation of the
heart.
971.. One of the difference between blood and lymph is
that
(A) blood has RBCs and WBCs while lymph has
Lymphocytes.
(B) blood has RBCs while lymph has no WBCs
(C) blood has WBCs while lymph has RBCs
(D) blood has dissolved organic salts while lymph has no such inorganic salt.
972. Blood vessel carrying blood from lung to heart through
(A) Pulmonary artery
(B) Pulmonary vein
(C) Coronary artery
(D) None of these.
973.Which of the following parts of a kidney contains the
lowest concentration of urea ?
(A) Lop of Henle
(B) Branches of renal vein
(C) Bowman’s capsule
(D) Glomerulus
974.Uriniferous tubules of a kidney are concerned with formation of
(A) glucose (B) amino acids
(C) hormones (D) urine
975.Excretion is removal of
(A) CO2
(B) harmful and useless ingredients
(C) extra water
(D) metabolic wastes
976. Main function of kidney is
(A) passive absorption (B) ultrafiltration
(C) selective reabsorptio (D) Both B and C
977. The raw materials for photosynthesis are
(A) CO2 & O2
(B) sunlight and CO2
(C) water and chlorophyll
(D) CO2 and water.
978.Most of the photosynthesis (80%) which takes place on this earth is carried out by
(A) green plants on land
(B) algae present in fresh water
(C) algae found in ocean
`(D) algae present in ocean and fresh water sources.
979. Which of the following ahs no digestive enzyme ?
(A) Saliva
(B) Bile
(C) Gastric juice
(D) Intestinal juice
980. Plants are green in colour because
(A) they absorb green light only
(B) they reflect green light
(C) they absorb green light but reflect all other lights
(D) none of the above are correct.
981. Full name of N ADP is
(A) Nicotinamide dinucleotide phosphate
(B) Nicotine adenine dinuceotide phosphate
(C) Nicotinamide adenine dinucleotide phosphate
(D) None of the above
982.Wavelength of visible light is
(A) 200 - 400 nm
(B) 400 - 700 nm
(C) 700 - 900 nm
(D) 100 - 200 nm
983.The presence of sugar in onion leaves can be tested with
(A) iodine
(B) copper sulphate solution
(C) lime water
(D) benedict’s solution
984. Chemical reaction takes place during dark reaction of photosynthesis is
(A) photolysis
(B) hydrolysis
(C) carbon dioxide is bonded with RUBP
(D) nitrogen fixation
985 Dark reaction and light reaction of photosynthesis takes place in
(A) stroma and grana of chloroplast respectively
(B) grana and stroma of chloroplast respectively
(C) grana only
(D) stroma only
986.CO2 acceptor during dark reaction of photosynthesis is
(A) RUBP (B) PEP
(C) NADPH (D) ATP
987 Compensation point refers to the intensity of light at which
(A) Rate of respiration = rate of photosynthesis
(B) Rate of respiration > rate of photosynthesis
(C) Rate of respiration < Rate of photosynthesis
(D) None of the above is correct
988.Among the following which is a parasitic plant ?
(A) Plasmodium (B) Cuscuta
(C) Amoeba (D) Rhizobium
989.The nutrition in mucor is
(A) parasitic (B) autotrophic
(C) saprophytic (D) holozoic
990.In amoeba the digestion is intracellular because
(A) amoeba is unicellular
(B) amoeba is multicellular
(C) amoeba is found is pond
(D) amoeba is microscopic animal
991. Digestion of food in human starts from
(A) duodenum (B) small intestine
(C) mouth (D) large intestine
992.The digestion of food is completed in the
(A) ileum (B) duodenum
(C) stomach (D) large intestine
993.The most important function of villi in the small intestine is
(A) to provide strength to the intestine
(B) to provide space for capillaries and lacteals
(C) to provide increased surface area for absorption
of digested food
(D) to provide habitat for bacteria
994.Which of the following sections does not contain enzymes ?
(A) Bile
(B) Pancreatic juice
(C) Intestinal juice
(D) Saliva
995. Chewing is an example of
(A) chemical digestion
(B) mechanical digestion
(C) involuntary action
(D) hydrolysis
996. The final product of digestion of carbohydrates and
proteins are
(A) glycerol and amino acid respectively
(B) glucose and amino acids respectively
(C) amino acids and glycerol respectively
(D) amino acids and glucose respectively
997. In amoeba the digestion of food is
(A) extracellular (B) intracellular
(C) intercellular (D) none of the above
998. Through mastication of food is essential because
(A) mastication of food makes the teeth stronger
(B) it makes the process of swallowing the food
easier
(C) by this process bigger pieces of food are broken
down into smaller pieces.
(D) bigger pieces of food are broken down into
smaller pieces and saliva is properly mixed with
999.The wave of contractions that pushes the food
through the alimentary canal is called
(A) peritoneum (B) peristalsis
(C) cyclosis (D) polarisation
1000.In amoeba absorption of the digested nutrient occurs in
(A) contractile vacuole
(B) plasma membrane
(C) cytoplasm
(D) pseudopodia
1001.Coiled and well developed alimentary canal firs developed in
(A) Protozoans (B) Mammals
(C) Arthropods (D) Poriferans
1002.Digestion of starch starts from
(A) stomach
(B) intestine
(C) esophagus
(D) mouth
1003 The path taken by food material after ingestion is represented by
(A) Mouth Pharynx Oesophagus Stomach
(B) Mouth Pharynx Oesophagus Small Intestine
(C) Mouth Oesophagus Stomach Pharynx
(D) Oesophagus Mouth Pharynx Stomach
1004.Teeth involved in cutting of food material are called
A.canines
B.incisors
C.molars
D.premolars
1005.. The green colour of plants is due to the presence of
(a) chlorophyll (b) carotene
(c) xanthophyll (d) starch
1006. During respiration exchange of gases take place in [NCERT Exemplar]
(a) trachea and larynx (b) alveoli of lungs
(c) alveoli and throat (d) throat and larynx
1007.The correct sequence of anaerobic reactions in yeast is [NCERT Exemplar]
(a) Glucose Cytoplasm Pyruvate Mitochondria Ethanol + Carbon dioxide
(b) Glucose Cytoplasm Pyruvate Cytoplasm Lactic acid
(c) Glucose Cytoplasm Pyruvate Mitochondria Lactic acid
(d) Glucose Cytoplasm Pyruvate Cytoplasm Ethanol + Carbon dioxide
1008. In which of the following vertebrate group/groups, heart does not pump oxygenated blood to different parts of the body? [NCERT Exemplar]
(a) Pisces and amphibians (b) Amphibians and reptiles
(c) Amphibians only (d) Pisces only
1009.Blood from superior vena cava flows into
(a) right atrium (b) right ventricle (c) left atrium (d) left ventricle
1010Which is the first enzyme to mix with food in the digestive tract? [NCERT Exemplar]
(a) Pepsin (b) Cellulase (c) Amylase (d) Trypsin
1011.. In which part of the alimentary canal food is finally digested? [NCERT Exemplar]
(a) Stomach (b) Mouth cavity (c) Large intestine (d) Small intestine
1012.When air is blown from mouth into a test-tube containing lime water, the lime water turned
milky due to the presence of [NCERT Exemplar]
(a) oxygen (b) carbon dioxide
(c) nitrogen (d) water vapour
1013.Choose the correct path of urine in our body. [NCERT Exemplar]
(a) Kidney ureter urethra urinary bladder
(b) Kidney urinary bladder urethra ureter
(c) Kidney ureter urinary bladder urethra
(d) Urinary bladder kidney ureter urethra
1014.The internal (cellular) energy reserve in autotrophs is [NCERT Exemplar]
(a) glycogen (b) protein (c) starch (d) fatty acid
1015.Which is the correct sequence of parts in human alimentary canal? [NCERT Exemplar]
(a) Mouth stomach small intestine oesophagus large intestine
(b) Mouth oesophagus stomach large intestine small intestine
(c) Mouth stomach oesophagus small intestine large intestine
(d) Mouth oesophagus stomach small intestine large intestine
1016. If salivary amylase is lacking in the saliva, which of the following events in the mouth cavity
will be affected? [NCERT Exemplar]
(a) Proteins breaking down into amino acids
(b) Starch breaking down into sugars
(c) Fats breaking down into fatty acids and glycerol
(d) Absorption of vitamins
1018. A few drops of iodine solution were added to rice water. The solution turned blue-black in
colour. This indicates that rice water contains [NCERT Exemplar]
(a) complex proteins (b) simple proteins (c) fats (d) starch
1019.Which of the following is most appropriate for aerobic respiration? [NCERT Exemplar]
(a) Glucose Mitochondria Pyruvate Cytoplasm CO2 + H2O + Energy
(b) Glucose Cytoplasm Pyruvate Mitochondria CO2 + H2O + Energy
(c) Glucose Cytoplasm Pyruvate + Energy Mitochondria CO2 + H2O
(d) Glucose Cytoplasm Pyruvate + Energy Mitochondria CO2 + H2O + Energy
1020. Single circulation, i.e., blood flows through the heart only once during one cycle of passage
through the body, is exhibited by [NCERT Exemplar]
(a) Labeo, Chameleon, Salamander (b) Hippocampus, Exocoetus, Anabas
(c) Hyla, Rana, Draco (d) Whale, Dolphin, Turtle
1021.Lack of oxygen in muscles often leads to cramps among cricketers. This results due to
[NCERT Exemplar]
(a) conversion of pyruvate to ethanol
(b) conversion of pyruvate to glucose
(c) non conversion of glucose to pyruvate
(d) conversion of pyruvate to lactic acid
1022.The opening and closing of the stomatal pore depends upon [NCERT Exemplar]
(a) oxygen
(b) temperature
(c) water in guard cells
(d) concentration of CO2 in stomata
1023.The inner lining of stomach is protected by one of the following from hydrochloric acid.
Choose the correct one. [NCERT Exemplar]
(a) Pepsin (b) Mucus (c) Salivary amylase (d) Bile
1024.Rings of cartilage present in the throat ensure that
(a) air is filtered (b) air is at room temperature
C.larnnx don't collapse
D.wind pipe don't collapse
1025.Which of the following organisms absorbs nutrition with haustoria?
(a) A carnivore (b) A herbivore (c) A parasite
(d) A saprophyte
1026.The process by which Amoeba obtains food is called
(a) phagocytosis (b) assimilation (c) diffusion (d) absorption
1027.Which of the following is not a digestive enzyme contained in the pancreatic juice?
(i) Lipase (ii) Hydrochloric acid
(iii) Mucus (iv) Trypsin
(a) (i) and (ii) (b) (i) and (iv) (c) (ii) and (iii)
(d) (i) and (iii)
1028.The enzymes pepsin and trypsin are secreted respectively by
(a) stomach and pancreas
(b) salivary gland and stomach
(c) liver and pancreas
(d) liver and salivary gland
1029. Among the following choose the correct option which includes the organisms that have a
holozoic mode of nutrition:
(a) Plasmodium and Amoeba
(b) Parakeet and Amoeba
(c) Paramecium and Plasmodium
(d) Paramecium and Parasite
1030.Raw materials required in the autotrophic mode of nutrition involves:
(i) Carbon dioxide and water (ii) Chlorophyll
(iii) Nitrogen (iv) Sunlight
(a) (i), (ii) and (iii) (b) (i) and (ii) (c) (i), (ii) and (iv) (d) All (i), (ii), (iii) and (iv)
1031.The enzymes in pancreatic juice help in the digestion of
(a) fats and carbohydrates (b) proteins and fats
(c) proteins and carbohydrates (d) proteins, fats and carbohydrates
1032.Which of the following help in protecting the inner lining of the stomach from the harmful
effect of hydrochloric acid?
(a) Mucus (b) Pepsin (c) Trypsin (d) Bile
1032.Sometimes we get painful cramps in our leg muscles after running for a long time due to the accumulation of
(a) hydrochloric acid (b) fat (c) carbon dioxide (d) lactic acid
1033.The vein which brings clean blood from the lungs into the heart is known as
(a) pulmonary vein (b) hepatic vein
(c) superior vena cava (d) pulmonary artery
1034.. Movement of the synthesized products from the leaves to the roots and other parts of a plant’s body takes place through the phloem. This process is known as
(a) translocation (b) transpiration
(c) transportation (d) excretion
1025.During deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in the [NCERT Exemplar]
(a) cytoplasm (b) chloroplast (c) mitochondria (d) golgi body
1026.. Which among the following procedures is used for cleaning the blood of a person by
separating the waste substance from it?
(a) Kidney transplant (b) Blood transfusion
(c) Dialysis (d) Hydrolysis
1027.The excretory unit of the human excretory system is known as
(a) nephridia (b) neuron (c) nephron (d) kidneys
1028.Plants use the energy stored in ATP to accomplish the process of transportation of
(a) water and minerals (b) oxygen
(c) water, minerals and food (d) food
1029. Which among the following is necessary to carry out the blood coagulation in a cut or wound?
(a) White blood cells (b) Blood plasma (c) Platelets (d) Red blood cells
1030.Arteries and veins are connected by a network of extremely narrow tubes called
(a) sieve tubes (b) capillaries (c) vena cava (d) valves
1031.Which of the following are energy foods?
(a) Carbohydrates and fats
(b) Proteins and mineral salts
(c) Vitamins and minerals
(d) Water and roughage
1032.. In which mode of nutrition an organism derives its food from the body of another living
organism without killing it?
(a) Saprotrophic nutrition (b) Parasitic nutrition
(c) Holozoic nutrition (d) Autotrophic nutrition
1033. The mode of nutrition found in fungi is
(a) parasitic nutrition (b) holozoic nutrition
(c) autotrophic nutrition (d) saprotrophic nutrition
1034.. Roots of the plants absorb water from the soil through the process of
(a) diffusion (b) transpiration (c) osmosis (d) none of these
1035.. The site of photosynthesis in the cells of a leaf is
(a) chloroplast (b) mitochondria (c) cytoplasm (d) protoplasm
1036.n Amoeba, food is digested in the
(a) food vacuole (b) mitochondria (c) pseudopodia (d) chloroplast
1
1037.Which region of the alimentary canal absorbs the digested food?
(a) Stomach (b) Small intestine (c) Large intestine (d) Liver
1038.. The contraction and expansion movement of the walls of the food pipe is called
(a) translocation (b) transpiration
(c) peristaltic movement (d) digestion
1039 The exit of unabsorbed food material is regulated by
(a) liver (b) anus (c) small intestine (d) anal sphincter
1040.What are the products obtained by anaerobic respiration in plants?
(a) Lactic acid + Energy (b) Carbon dioxide + Water + Energy
(c) Ethanol + Carbon dioxide + Energy (d) Pyruvate
1041. The breakdown of pyruvate to give carbon dioxide, water and energy takes place in
(a) cytoplasm (b) mitochondria (c) chloroplast (d) nucleus
1042.Glycolysis process occurs in which part of the cell?
(a) Cytoplasm (b) Nucleus (c) Mitochondria (d) Chloroplast
1043 Name the substances whose build up in the muscles during vigorous physical exercise may cause cramps?
(a) Ethanol + Carbon dioxide + Energy
(b) Lactic acid + Energy
(c) Carbon dioxide + Water + Energy
(d) Pyruvate
1044.. Name the pores in a leaf through which respiratory exchange of gases takes place.
(a) Lenticels (b) Vacuoles (c) Xylem (d) Stomata
1045.The respiratory pigment in human beings is
(a) carotene (b) chlorophyll (c) haemoglobin (d) mitochondria
1046. Which plant tissue transports water and minerals from the roots to the leaf?
(a) Xylem (b) Phloem (c) Parenchyma (d) Collenchyma
1047.A blood vessel which pumps the blood from the heart to the entire body is called
(a) artery (b) capillary (c) vein (d) haemoglobin
1048. Name a circulatory fluid in the human body other than blood.
(a) Platelets (b) RBC (c) Lymph (d) Plasma
1049.Name the tube which connects the kidneys to the urinary bladder.
(a) Urethra (b) Nephron (c) Tubule (d) Ureter
1050.Which part of nephron allows the selective reabsorption of useful substances like glucose,
amino acids, salts and water into the blood capillaries?
(a) Tubule (b) Glomerulus (c) Bowman’s capsule (d) Ureter
1056.Where is the dirty blood in our body filtered?
(a) Heart (b) Lungs (c) Ureter (d) Kidneys
1057.. Autotrophic organisms include
(a) bacteria and virus (b) bacteria and fungi
(c) green plants and some bacteria (d) green plants and all bacteria
1058.Which of the following are chiefly digested in the stomach?
(a) Carbohydrates (b) Proteins (c) Lipids (d) Fats
1059.. From the given picture of the digestive system, identify the part labelled as gastric gland.
A in liver
B in dudenum
C in pancres
D in stimach
(a) A (b) B (c) C (d) D
1059. Large intestine in man mainly carries out
(a) absorption of water (b) assimilation
(c) digestion of fats (d) digestion of carbohydrates
1060. The part of the digestive system where no digestion takes place is
(a) ileum (b) stomach (c) mouth (d) oesophagus
1061.The fermentation of glucose by yeast normally yields
(a) alcohol, CO2 and 36 ATP (b) CO2, H2O and 36 ATP
(c) alcohol, CO2 and 2 ATP (d) lactic acid, CO2 and 2 ATP
1062.A large quantity of one of the following is removed from our body by lungs?
(a) CO2 and H2O (b) CO2 only (c) H2O only (d) Ammonia
1063.In respiration, air passes through
(a) Pharynx → nasal cavity → larynx → trachea bronchi → bronchioles
(b) Nasal cavity → pharynx → larynx → trachea → bronchi → bronchioles
(c) Larynx → nasal cavity → pharynx → trachea
(d) Larynx → pharynx → trachea → lungs
1064.. A biochemical compound that readily combines with oxygen and distributes it throughout the human body is
(a) water (b) urea (c) haemoglobin (d) acetylcholine
1065 The process in which loss of water takes place in the form of water vapour through stomata is called
(a) transportation (b) transpiration (c) guttation (d) translocation
1
1066.. In a closed circulatory system, blood is completely enclosed within
(a) vessels (b) heart (c) skeleton (d) sinuses
1067.. Normal blood pressure (systolic/diastolic) is
(a) 120/80 mm of Hg (b) 160/80 mm of Hg
(c) 120 60 mm of Hg (d) 180/80 mm of Hg
1068.. Blood pressure is measured by an instrument called
(a) barometer (b) sphygmomanometer(c) photometer (d) manometer
1069.Which of the following statements is not correct?
(a) Deoxygenated blood is poured into right atrium of heart.
(b) The excretory units of flatworms are flame cells.
(c) Human kidney has about 1 million nephridia.
(d) Tracheids and vessels are non-living conducting tissues.
1070.. The chlorophyll in photosynthesis is used for
(a) absorbing light
b) breaking down water molecule
(c) no function
(d) reduction of CO2
1p71.Proteins after digestion are converted into
(a) carbohydrates (b) small globules (c) amino acids (d) starch
1072.Carbohydrates in the plants are stored in the form of
(a) glycogen (b) starch (c) glucose (d) maltose
1073. Opening and closing of pores is a function performed by
(a) stomata (b) chlorophyll (c) chloroplast (d) guard cells
1074.. Which element is used in the synthesis of proteins?
(a) Hydrogen (b) Oxygen (c) Nitrogen (d) Carbon dioxide
1075.Temporary finger like extensions on Amoeba are called
(a) cell membrane (b) cell wall (c) pseudopodia (d) cilia
1076.. Bile juice is secreted by
(a) stomach (b) pancreas (c) small intestine (d) liver
1077.Which of these juices is secreted by pancreas?
(a) Trypsin (b) Pepsin (c) Bile juice (d) Both (a) and (b)
1078.Lipase acts on
(a) amino acids (b) fats (c) carbohydrates (d) all of these
1079.Blood consist of what fluid medium?
(a) Lymph (b) Platelets (c) Plasma (d) All of these
1080.. One cell-thick vessels are called
(a) arteries (b) veins (c) capillaries (d) pulmonary artery
1081. The image shows the process of making food by a plant. Which statement can be concluded from the image?
(a) Plants absorb CO2 from air and H2O from the
soil as raw materials and convert them into
glucose.
(b) Plants absorb O2 from air and minerals from
the soil as raw materials and convert them into
heat energy.
(c) Plants absorb O2 from air and glucose from
the soil as raw materials and convert them into
light energy.
(d) Plants absorb CO2 from the soil and H2O from air as raw materials and convert them into
glucose.
1082.. A student sets up an experiment to study the importance of nutrition in plants. The student takes 2 pots, pot 1 and pot 2 each with the same healthy plant. Both the pots were placed in the garden and watered properly. Pot 1 was kept as such, while pot 2 was kept in an air tight glass box with caustic soda. Caustic soda absorbs carbon dioxide present in the surrounding. After 2 days, the student observes that the plant kept in the garden is healthy while the plant placed in container shed leaves and droops. What is the likely reason for this observation?
(a) Absence of oxygen for survival
(b) Absorption of light by caustic soda restricting growth
(c) Inability to perform photosynthesis
(d) Lack of nutrients in the soil
1083.. Which of the equation show correct conversion of CO2 and H2O into carbohydrates in plants?
(a) 6CO2 + 12H2O
Heat energy
Chlorophyll
( ) u e cosGl
C H6 12 6 O + C6H12O6 + 6O2 + 6H2O
(b) 6CO2 + 6H2O
Sunlight
Chlorophyll
( ) u e cosGl
C H6 12 6 O + 6O2 + 12H2O
(c) 6CO2 + 12H2O
Sunlight
Chlorophyll
( ) u e cosGl
C H6 12 6 O + 6O2 + 6H2O
(d) 6CO2 + 6H2O
Heat energy
Chlorophyll
( ) u e cosGl
C H6 12 6 O +C6H12O6 + 6O2 + 12H2O
1084.A student sets up an experiment to study the photosynthesis in plants. Tstudent destarched
a potted plant by keeping it in a dark room for 3 days. Half of the portion of destarched leaf
was placed in a bottle containing caustic potash (absorbs CO2) as shown.
The student then places the plant in light
and tests the leaf after 5 hours for the
presence of starch. The portions inside
the bottle shows negative starch test by
reflecting no change in colour when react
with iodine, however, other upper portions
of the leaf gave positive starch test showing
blue-black colour with iodine. What can be
evaluated from this experiment?
(a) Lack of carbon dioxide increases amount
of starch in plant.
(b) Carbon dioxide is necessary for preparing carbohydrate.
(c) Carbon dioxide is directly linked with the colour of leaf.
(d) Lack of carbon dioxide slows the process of photosynthesis.
1085. The image shows the bread moulds on a bread.
How these fungi obtain nutrition?
(a) By using nutrients from the bread to prepare their own
food.
(b) By allowing other organisms to grow on the bread and
then consuming them.
(c) By breaking down the nutrients of bread and then
absorbing them.
(d) By eating the bread on which it is growing.
1086.. The image shows how Amoeba obtains nutrition.Food particle Nucleus Food particle Food vacuole Pseudopodia
How this process is advantageous for Amoeba?
(a) Capturing of food takes less time. (b) More amount of food can be consumed.
(c) Complex food can be digested easily. (d) Fast distribution of nutrition within the body.
1087.. The image shows the human digestive system.
]
Mouth
Tongue
Oseophagus
Stomach
Pancreas
Small intestine
Rectum
Anus
Large
intestine
Gall bladder
Liver
Pharynx
Digestion of food starts from which organ of the digestive system?
(a) Mouth due to the presence of saliva.
(b) Pancreas that releases juices for fat breakdown.
(c) Oesophagus that moves the food in gut.
(d) Stomach which helps in mixing food with digestive juices.
1088. The image shows a cross section of small intestine.
What will be the likely happen if the number of villi
increases in the intestine?
(a) Increase in the absorption of food.
(b) Fast breakdown of larger food particles into smaller ones.
(c) Increase in flow of blood in the small intestine.
(d) Fast elimination of waste from the body
1089.. An incomplete equation for the digestion of starch using saliva is shown as:
Saliva + Starch (in test tube) →
What will be the likely outcome of this?
(a) Saliva will breakdown starch into simple protein molecules.
(b) Saliva will convert starch into complex fat molecules.
(c) Saliva will breakdown starch into simple sugar molecules.
(d) Saliva will convert starch into complex sugar molecules.
1090.. A student sets up an experiment to study the role of enzymes in digestion of food.
Egg white
+ pepsin
Egg white
+ pepsin + HCl
A B
In which test tube, the digestion of protein will occur?
(a) Test tubes A as pepsin will breakdown protein into simple molecules.
(b) Test tube B as HCl will breakdown protein into simple molecules.
(c) Test tube A as pepsin will breakdown into simple molecules.
(d) Test tube B as HCl will activate pepsin for breakdown of protein into simple molecules.
1091.The image shows the flow diagram for the breakdown of glucose in yeast. Under
which condition these types of products are obtained?
(a) In the presence of carbon dioxide (b) In the absence of oxygen
(c) In the presence of oxygen (d) In the absence of carbon dioxide
1092.. Which pathway will occur in the cell of an athlete who is performing 100 m
sprint?
(a) Glucose Pyruvate Ethanol CO Energy c o
2
In ytoplasm Absence of xygen + +
(b) Glu e cos Pyruvate Lactic acid Energy ( )
In cytoplasm
in human muscle cells
Lack of oxygen +
(c) Glucose
Lactic acid
+ Energy
In cytoplasm Pyruvate
Prsence of
oxygen CO2 + Water
(in mitochondria) +Energy
Lack of oxygen
(in human
muscle cells)
(d) Glucose
Lactic acid
+ Energy
In cytoplasm Pyruvate
Absence of
oxygen Ethanol + CO2
+Energy
1093. Which of the following is an incorrect statement? [NCERT Exemplar]
(a) Organisms grow with time
(b) Organisms must repair and maintain their structure
(c) Movement of molecules does not take place among cells
(d) Energy is essential for life processes
1094. Which of the following equations is the summary of photosynthesis? [NCERT Exemplar]
(a) 6CO2 + 12H2O → C6H12O6 + 6O2+ 6H2O
(b) 6CO2 + H2O + Sunlight → C6H12O6 + O2+ 6H2O
(c) 6CO2 + 12H2O + Chlorophyll + Sunlight → C6H12O6 + 6O2+ 6H2O
(d) 6CO2 + 12H2O + Chlorophyll + Sunlight → C6H12O6 + 6CO2+ 6H2O
1095. Choose the event that does not occur in photosynthesis [NCERT Exemplar]
(a) Absorption of light energy by chlorophyll
(b) Reduction of carbon dioxide to carbohydrates
(c) Oxidation of carbon to carbon dioxide
(d) Conversion of light energy to chemical energy
1096.. Choose the forms in which most plants absorb nitrogen [NCERT Exemplar]
(i) Proteins (ii) Nitrates and Nitrites
(iii) Urea (iv) Atmospheric nitrogen
(a) (i) and (ii) (b) (ii) and (iii) (c) (iii) and (iv) (d) (i) and (iv)
1097. Which of the following statement(s) is (are) correct? [NCERT Exemplar]
(i) Pyruvate can be converted into ethanol and carbon dioxide by yeast
(ii) Fermentation takes place in aerobic bacteria
(iii) Fermentation takes place in mitochondria
(iv) Fermentation is a form of anaerobic respiration
(a) (i) and (iii) (b) (ii) and (iv) (c) (i) and (iv)
removed by:
A. washing with water
B. washing with calcium chloride solution
C. soaking with blotting paper
D. absorbing with cotton wool
886.. Mahi has two aquatic plants of the same size and species. She submerges each plant in
a separate beaker filled with 200 ml of water. She then sets each beaker under light bulbs of
different intensity. Mahi observes that plant 2 kept under more intense light gives off more gas
bubbles in a 20 min period than plant 1 which is kept under less intense light.
Which of the following statements best explains Mahi's observations?
A. Photosynthesis occurs at a higher rate in plant 1 than plant 2.
B. Photosynthesis occurs at a higher rate in plant 2 than plant 1.
C. Photosynthesis occurs at the same rate in both plant 1 and plant 2.
D. Photosynthesis does not occur in aquatic plants, only cellular respiration occurs
887.Which of the following are examples of respiration?
1. Humans use oxygen and release carbon dioxide.
2. Plants use carbon dioxide and release oxygen.
3. Dry leaves burn and use oxygen and release carbon dioxide.
A) only 1 B) only 2 C) only 1 and 2 D) 1, 2 and 3
888. Stomata are tiny pores on the surface of the leaves__________.
A. through which water is taken in
B. through which sunlight is taken in
C. which produces the pigment chlorophyll
D. through which carbon dioxide is taken in
889.Four friends were discussing why our body requires food and why we need to eat. Here
is what they said.
Sam: "We need food only because we get hungry."
Mike: "We need food only to get energy from it."
Jill: "The only reason we eat food is that it helps us to grow."
John: "We need to eat food for energy as well as to grow."
Whose statement BEST explains why we need to eat food?
A. Sam B. Mike C. Jill D. John
890.Amoeba is a microscopic single-celled organism whose food capturing organs are
A.pseudopodia
B.cilia
C.flagella
D.tentaclea
881.We inhale air. This air contains oxygen, which is necessary to carry out the process of
respiration. In which of these organs is oxygen separated from the inhaled air?
A. nose B. lungs C. heart D. oesophagus
882.The intestinal wall is richly supplied with blood vessels so that_______________.
A. the absorbed food can be transported to the rest of the body
B. the energy released by the process of digestion can be absorbed
C. the carbon dioxide in the intestine released can be removed faster
D. the blood can mix with the food inside it and carry away the nutrients and wastes
883. Which of these is/are main functions of saliva?
P. to digest starch present in the food
Q. to moisten the food for easy swallowing
R. to quench thirst
A. only P B. only Q C. only P and Q D. only Q and R
884.THREE friends were discussing the function of the tongue. This is what they said.
Shashank: "The tongue moves the food around the mouth so that we can chew it
better."
Anita: "The tongue helps us taste the food."
Radha: "The tongue breaks down large food pieces to smaller ones."
Who is correct?
A. only Shashank B. only Anita
C. only Shashank and Anita D. all - Shashank, Anita and Radha
885. 3 friends were discussing the function of the tongue. This is what they said.
Shashank: "The tongue moves the food around the mouth so that we can chew it
better."
Anita: "The tongue helps us taste the food."
Radha: "The tongue breaks down large food pieces to smaller ones."
Who is correct?
A. only Shashank B. only Anita
C. only Shashank and Anita D. all - Shashank, Anita and Radha
886. Organisms break down large food molecules to small molecules. How does
this breakdown help the organisms?
A. It releases a lot of energy in the digestive tract that can be used up by the cells.
B. It ensures that there are enough raw materials to produce and supply oxygen to the cells.
C. It converts the large molecules to small molecules that can pass through the cell membrane.
D. It makes sure that the liberation of heat by the breakdown of large molecules does not occur
inside the cell.
887.. Identify the correct order in which food passes from our mouth through our body.
A. mouth, food pipe, anus, stomach, intestine B. mouth, food pipe, intestine, stomach, anus
C. mouth, food pipe, stomach, intestine, anus D. mouth, food pipe, anus, intestine, stomach
888.Which of the following undergoes chemical digestion due to substances secreted by the
wall of the stomach?
A. only fats B. only sugars C. only proteins D. all - fats, sugars and proteins
889.Choose the correct options: The process of excretion involves the removal of -
P. waste products of life processes
Q. excess of substances like water and salts
R. harmful substances that we may have taken in during eating or breathing
A. only P B. only P and Q C. only P and R D. all - P, Q and R
890.Digestion of food starts from which organ of the human digestive system?
A. mouth due to the presence of saliva
B. oesophagus that moves the food in gut
C. that releases juices for fat breakdown
D. which helps in mixing food with digestive juices
891.The image shows the transport of gases in the body through the heart and lungs.
Which option correctly shows the transport of oxygen to the cell?
(a) Lungs →pulmonary vein →left atrium →left ventricle →aorta → body cells
(b) Lungs →pulmonary vein →right atrium →right ventricle → aorta → body cells
(c) Lungs →pulmonary artery →left atrium → left ventricle → vena cava → body cells
(d) Lungs →pulmonary artery →right atrium → right ventricle→ vena cava → body cell
892.How is food transported from phloem to the tissues according to plants’ needs?
(a) food is transported along with the water in the plant’s body.
(b) food is transported in only direction like water in the plant body through xylem.
(c) food is transported from a region with low concentration to higher concentration.
(d) food is transported from a region where it is produced to other parts of the plants.
893.A few drops of iodine solution were added to rice water. The solution turned blue‐black in
colour. This indicates that rice water contains
A. complex proteins B. simple proteins C. fat
894. Carefully study the diagram of the human respiratory system with labels A, B, C and D.
Select the option which gives correct identification and main function and /or characteristic.
A. (i) Trachea: It is supported by bony rings for conducting
inspired air.
B. (ii) Ribs: When we breathe out, ribs are lifted.
C. (iii) Alveoli: Thin-walled sac like structures for exchange
of gases.
D. (iv) Diaphragm: It is pulled up when we breathe in.
895.What is the percentage of the oxygen in the expired air when a person is resting:
A. 12% B. 16% C. 20% D. 24%
896. Identify the option that indicates the correct enzyme that is secreted in location A, B and C.
A. (i)-lipase, (ii)-trypsin, (iii)-pepsin
B. (i)-amylase, (ii)-pepsin, (iii)-trypsin
C. (i)-trypsin, (ii)-amylase, (iii)-carboxylase
D. (i)-permease, (ii)-carboxylase, (iii)-oxidase
898.Opening and closing of stomatal pore depends on:
A. Atmospheric temperature
B. oxygen concentration around stomata
C. carbon dioxide concentration around stomata
D. water content in the guard cells
899.The chlorophyll in photosynthesis is used for
A. Absorbing light
B. Breaking down water molecule
C. No function
D. Reduction of CO2
900.The figure given below shows a schematic plan of blood circulation in
humans with labels (i) to (iv). Identify the correct label with its functions?
A. (i) Pulmonary vein - takes impure blood from body part.
B. (ii) Pulmonary artery - takes blood from lung to heart.
C. (iii) Aorta - takes blood from heart to body parts.
D. (iv) Vena cava takes - blood from body parts to right auricle.
901.Assertion: Resins and gums are stored in old xylem tissue in plants.
Reason: Resins and gums facilitate transport of water molecules.
902.Assertion: In the day time, CO2 generated during respiration is used up for
photosynthesis.
Reason: There is no CO2 release during day.
903.Assertion: The main organ of human excretory system is kidney.
Reason: Kidney perform the function of removing excess water and nitrogenous wastes
from the body.
904.Assertion: Molecular movements are needed for life.
Reason: Body structures made up of these molecules need continuous repair and
maintenance.
905.Identify the phase of circulation which is represented in the diagram of heart given below.
Arrows indicate contraction of the chambers shown.
A. Blood transferred to the right ventricle and left ventricle
simultaneously.
B. Blood is transferred to lungs for oxygenation and is pumped into
various organs simultaneously.
C. Blood transferred to the right auricle and left auricle
simultaneously.
D. Blood is received from lungs after oxygenation and is received from
various organs of the body
906. Carbohydrates in the plants are stored in the form of
A. Glycogen B. Starch C. Glucose D. Maltose
38Q. Select the option which gives correct function and /or characteristic: of the four parts of
human respiratory system.
A. Alveoli: Thin-walled sac like structures for exchange of gases.
B. Diaphragm: It is pulled up when we breathe in.
C. Trachea: It is supported by bony rings for conducting inspired air.
D. Ribs: When we breathe out, ribs are lifted.
907. Photosynthesis is a
A. Catabolic process B. Parabolic process
C. Amphibolic process D. Photochemical process
908.Which element is used in the synthesis of proteins?
A. Hydrogen B. Oxygen C. Nitrogen D. Carbon dioxide
909.Given below are the functions of some parts of human circulatory system. Identify the
correct match.
A. Pulmonary vein – takes oxygenated blood from body parts to heart
B. Artery – takes oxygenated blood from heart to lung
C. Dorsal aorta – takes deoxygenated blood from heart to body parts
D. Vena cava – takes deoxygenated blood from body parts to right atrium
910.The image shows the structure of a nephron.
Nephron is a unit of filtration in kidneys that filters
waste material. It selectively reabsorbs or excretes
water with the help of capillaries that surround it.
What is the likely benefit of this?
A. It makes the process of filtration at Bowman’s
capsule easier
B. It helps keep the output of urine constant
throughout the day
C. It helps to uptake and store excess amount of
water in the body for later use
D. It maintains the concentration of urine based on the amount of water present in the body
911 The light-yellow colour of a liquid, present in urinary bladder, having pH 6 is due to the
presence of
A. Haemoglobin B. Urochrome C. Xanthophyll D. None of these
912. The image shows the flow diagram for the breakdown
of glucose in yeast. Under which condition
these types of products are obtained?
A. in the presence of oxygen
B. in the absence of oxygen
C. the presence of carbon dioxide
D. in the absence of carbon dioxide
913.A student sets up an experiment
to study the photosynthesis in plants.
The student destarched a potted plant
by keeping it in a dark room for 3 days.
Half of the portion of destarched leaf
was placed in a bottle containing
caustic potash (absorbs CO2) as shown.
The student then places the plant in
light and tests the leaf after 5 hours for
the presence of starch. The portions
inside the bottle shows negative starch
test by reflecting no change in colour
when react with iodine, however, other upper portions of the leaf gave positive starch test
showing blue-black colour with iodine. What can be evaluated from this experiment?
A. carbon dioxide is directly linked with the colour of leaf
B. carbon dioxide is necessary for preparing carbohydrate
C. lack of carbon dioxide increases amount of starch in plant
D. lack of carbon dioxide slows the process of photosynthesis
914.Correct sequence of urine formation is
A. filtration, reabsorption, collection B. secretion, reabsorption, filtration
C. reabsorption, filtration, collection D. secretion, reabsorption, collection
915.What happens when right and left ventricle contract during pumping of blood by human
Heart?
A. Blood transferred to the right ventricle and left ventricle simultaneously.
B. Blood is transferred to lungs for oxygenation and is pumped into various organs simultaneously.
C. Blood transferred to the right atrium and left atrium simultaneously.
D. Blood is received from lungs after oxygenation and is received from various organs of the body.
Digestion is a catabolic process in which complex and large components of food are
broken down into their respective simpler and smaller forms with the help of various
hydrolytic enzymes. In human, the process of intake of essential nutrients in the form of
food takes place through an entire system known as digestive system. The digestive
system in human includes alimentary canal and its associated digestive glands.
916.dentify the cells whose secretion protects the lining of gastro-intestinal tract from
various enzymes.
A. Duodenal cells B. Chief cells C. Goblet cells D. Oxyntic cells
917 Digestion of proteins is incomplete in the absence of enterokinase, because
A. trypsinogen is not converted into trypsin
B. pepsinogen is not converted into pepsin
C. prorenin is not converted into rennin
D. chymotrypsinogen is not converted into chymotrypsin
918.. Match the column I with column II and column III. Choose the correct option.
Column I Column II Column III
(Substrate) (Enzyme) (Product)
1. Lactose A. Lipase I. Galactose
2. Fatty acid B. Trypsin II. Maltose
3. Starch C. Lactase III. Glycerol
4. Proteins D. Amylase IV. Dipeptides
A. 1 - A - I; 2 - C - II; 3 - B - III; 4 - D - IV
B. 1 - D - I; 2 - A - II; 3 - B - III; 4 - C - IV
C. 1 - C - I; 2 - A - III; 3 - D - II; 4 - B - IV
D. 1 - C - I; 2 - A - II; 3 - D - III; 4 - B – IV
Read the following and answer any four questions from
The Figure shown below represents an activity to prove the requirements for photosynthesis.
During this activity, two healthy potted plants were kept in the dark for 72 hours. After 72
hours, KOH is kept in the watch glass in setup ‘a’ and not in setup ‘b’. Both these setups are air
tight and have been kept in light for 6 hours. Then, Iodine Test is performed with one leaf from
each of the two plants ‘a’ and ‘b’.
919.This experimental set up is used to prove essentiality of which of the following
requirements of photosynthesis?
A. Chlorophyll B. Oxygen C. Carbon dioxide D. Sunlight
920.The function of KOH is to absorb
A. Oxygen. B. Carbon dioxide. C. Moisture. D. Sunlight.
921.Which of the following statements shows the correct results of Iodine Test performed on
the leaf from plant ‘a’ and ‘b’ respectively?
A. Blue - black colour would be obtained on the leaf of plant Xand no change in colour on leaf of plant Y.
B. Blue - black colour would be obtained on the leaf of plant Y and no change in colour on leaf of plant X.
C. Red colour would be obtained on the leaf of plant X and brown colour on the leaf of plant Y.
D. Red colour would be obtained on the leaf of plant Y and brown colour on the leaf of plant X
922. Which of the following steps can be followed for making the apparatus air tight?
i. placing the plants on glass plate
ii. using a suction pump.
iii. applying Vaseline to seal the bottom of jar. iv. creating vacuum
A. i and ii B. ii. and iii C. i. and iii D. ii. and iv
Ayush experienced muscular cramps during the training session for his upcoming cricket
match. His coach advised him on a schedule of aerobic exercises to overcome this
problem. Ayush followed his coach's advice and did not experience any muscular cramps
during the game.
923.Lack of oxygen in muscles often leads to cramps due to
A. conversion of pyruvate to ethanol C. non-conversion of glucose to pyruvate
B. conversion of pyruvate to glucose D. conversion of pyruvate to lactic acid
924. Which substances are produced by anaerobic respiration in yeast?
A.ehanol
B.lactic acid
C.carbondioxide
D.energy
925.. The diagram shows an experiment to investigate anaerobic respiration in yeast cell:
What is the purpose of liquid paraffin in tube A?
A. To prevent evaporation
B. To stop air from getting in
C. To stop the temperature from going up
D. To stop water from getting in
926.The indicator colour in tube B changes in the concentration of carbon dioxide if tube B
contains lime water. what will be the colour after sometimes?
A. Milky B. Black C. Yellow
927.all the co2 produced in respiration is used in the morning by plants are used for
A.photosynthesis
B.transpiration.
C.light reaction of photosynthesis
D.dark reaction of photosynthesis
928.dark reaction of photosynthesis means
A.it occurs in dark only.
B it occurs in light only
C it occurs after energy ATP preparation in light reaction
D.it occurs in the evening
930.The process of respiration is concerned with
(A) liberation of oxygen
(B) liberation of carbon dioxide
(C) liberation of energy
(D) intake of oxygen
931.The common immediate source of energy for cellular
activity is
(A) NAD (B) ATP
(C) DNA (D) RNA
932.The tissue respiration refers to
(A) inspiration
(B) external respiration
(C) internal respiration
(D) expiration
933. If the CO2 concentration in the blood increases, the
rate of breathing will
(A) decrease
(B) stop
(C) increase
(D) have no effect
934.Vocal cards occur in
(A) pharynx
(B) glottis
(C) bronchial tube
(D) larynx
935. In man, which of the following structures is
analogous to the spiracles of cockroach ?
(A) Alveoli
(B) Lungs
(C) Bronchioles
(D) Nostrils
936.Which of the following prevents collapsing of
trachea ?
(A) Diaphragm
(B) Ribs
(C) Cartilaginous ring
(D) Muscles
937.Which of the following gases makes the most stable
combination with the hemoglobin of red blood cells.
(A) CO2 (B) CO (C) O2 (D) N2
938.Volume of air inspired or expired with each normal
breath is called
(A) tidal volume
(B) inspiratory capacity
(C) total lung capacity
(D) residual volume
939.Most of the carbon dioxide in the blood is carried in
the form of
(A) carbonic acid
(B) bicarbonates
(C) carbaminohaemoglobin
(D) dissolved CO2
940.Breathing rate in mammals in controlled by a part of
the brain called the
(A) thalamus
(B) hypothalamus
(C) medulla oblongata
(D) cerebellum
941.In anaerobic respiration
(A) O2 is taken in (B) CO2 is taken in
(C) O2 is given out (D) CO2 is given out
942. Disease called pleurisy is due to
(A) inflammation of pleura
(B) inflammation of trachea
(C) inflammation of alveoli
(D) none of these above
943.. Leaves respire with the help of
(A) lenticles
(B) stomata
(C) plasmodesmata
(D) cuticle
944.Correct statement is
(A) roots of plant respire through lenticles and
stomata.
(B) stem of plant respire through lenticles
(C) both A and B are correct
(D) both A and B are incorrect
945. Which of the following is not a characteristic of good respiratory surface ?
(A) Thin and moist
(B) Large surface area
(C) Close to oxygen and gas transport
(D) Thick and dry surface
946.Respiration in yeast
(A) takes place in the presence of oxygen
(B) yields lactic acid and carbon dioxide
(C) in anaerobic and produces carbon dioxide
(D) takes place only in darkness
947. Muscle cells engaged in vigorous activity build up a
high concentration of
(A) lactic acid
(B) pyruvic acid
(C) alcohol
(D) cholesterol
948. Exchange of respiratory gases takes place in an earthworm through
(A) moist skin (B) gills
(C) trachea (D) lungs
949.Oxygen is transported in blood mainly by
(A) leucocytes
(B) erythrocytes
(C) thrombocytes
(D) blood plasma
950.What do you mean by inhalation and exhalation ?
A.takimg I'm co2 and giving out o2
B.taking co2 and giving co2
C.taking 02 and giving co2
D.takung 02 and giving 02
951.Draw a diagram showing human respiratory system.
Label its following parts :
(i) Larynx (ii) Trachea (iii) Primary bronchus (iv)
Lungs
952.Name the respiratory organs in the following :
(i) A fish (ii) A bird (iii) An earthworm
953.Osmosis is the movement of :
(A) solute particles from higher concentration to
lower concentration
(B) solvent particles from higher water potential to
lower water potential through a semi permeable
membrane
(C) solute particles from higher concentration to
lower concentration through a semipermeable
membrane
(D) solvent particles from lower water potential to higher water potential.
954.The ultimate cause for the movement of water
against the gravity in a tree is
(A) osmosis (B) transpiration
(C) imbibitions (D) photosynthesis
955. Which one of the following is connected with
transport of water in plants ?
(A) Phloem (B) Xylem
(C) Epidermis (D) Cambium
956.Which of the following contributes most to transport of water from the ground to the leaves of a tall tree?
(A) Breakdown of ATP
(B) Capillary rise of water is xylem
(C) Cohesion of water and transpiration pull
(D) Root pressure.
957. The process of transpiration in plants helps in
(A) opening of stomata
(B) absorption of CO2 from atmosphere
(C) upward conduction of water and minerals
(D) absorption of O2 from atmosphere
958.. Opening and closing of stomata is due to
(A) pressure of gases inside the leaves
(B) changes of turgor pressure in guard cells
(C) effect of hormones
(D) their genetic constitutio
959. The carbohydrates synthesized in the leaves are transported through sieve tubes most commonly in the form of
(A) glucose (B) starch
(C) sucrose (D) cellulose
960.. In a closed circulatory system, blood is completely enclosed with in
(A) sinuses (B) vessels
(C) heart (D) skeleton
961.An artery is a vessel that carries blood
(A) with high concentration of oxygen
(B) with high concentration of CO2
(C) away from the heart
(D) both A & C
962.. Values are found in veins to check the backflow of
blood flowing under
(A) low pressure
(B) high pressure
(C) no pressure
(D) atmospheric pressure.
963.The phenomena non of uptake of water at the expense of energy by the cells and usually against the osmotic gradient is known as
(A) active absorption
(B) passive absorption
(C) osmosis
(D) diffusion
964. Water will be absorbed by root hair when
(A) concentration of solutes in the cells sap in high
(B) plant in rapidly respiring
(C) they are separated from soil by a permeable
membrane
(D) concentration of salts in the soil in high.
965.Root cap has no role in water absorption because
(A) it has no direct connection with the vascular
system
(B) it has no cells containing chloroplasts
(C) it has no root hairs
(D) it has loosely arranged cells.
966.Which of the following is used in measuring
transpiration ?
(A) Photometer
(B) Cobalt chloride paper
(C) Bell - jar
(D) None of the above
967.Translocation of solutes primarily takes place
through
(A) phloem (B) xylem
(C) cortex (D) pith.
968.A mature human erythrocyte has the typical
characteristic of
(A) a eukaryotic cell
(B) a prokaryotic cell
(C) both eukaryotic and prokaryotic cell
(D) neither eukaryotic nor prokaryotic cell
969.. Removal of calcium from freshly collected blood will
(A) result in clotting
(B) prevent clotting
(C) prevent oxidation of hemoglobin
(D) cause hemolysis
970. In the cardiac cycle, diastole is
(A) the number of heart beats per minute
(B) the relaxation period after contraction of the heart
(C) the forceful pumping action of the heart
(D) the contraction period after relaxation of the
heart.
971.. One of the difference between blood and lymph is
that
(A) blood has RBCs and WBCs while lymph has
Lymphocytes.
(B) blood has RBCs while lymph has no WBCs
(C) blood has WBCs while lymph has RBCs
(D) blood has dissolved organic salts while lymph has no such inorganic salt.
972. Blood vessel carrying blood from lung to heart through
(A) Pulmonary artery
(B) Pulmonary vein
(C) Coronary artery
(D) None of these.
973.Which of the following parts of a kidney contains the
lowest concentration of urea ?
(A) Lop of Henle
(B) Branches of renal vein
(C) Bowman’s capsule
(D) Glomerulus
974.Uriniferous tubules of a kidney are concerned with formation of
(A) glucose (B) amino acids
(C) hormones (D) urine
975.Excretion is removal of
(A) CO2
(B) harmful and useless ingredients
(C) extra water
(D) metabolic wastes
976. Main function of kidney is
(A) passive absorption (B) ultrafiltration
(C) selective reabsorptio (D) Both B and C
977. The raw materials for photosynthesis are
(A) CO2 & O2
(B) sunlight and CO2
(C) water and chlorophyll
(D) CO2 and water.
978.Most of the photosynthesis (80%) which takes place on this earth is carried out by
(A) green plants on land
(B) algae present in fresh water
(C) algae found in ocean
`(D) algae present in ocean and fresh water sources.
979. Which of the following ahs no digestive enzyme ?
(A) Saliva
(B) Bile
(C) Gastric juice
(D) Intestinal juice
980. Plants are green in colour because
(A) they absorb green light only
(B) they reflect green light
(C) they absorb green light but reflect all other lights
(D) none of the above are correct.
981. Full name of N ADP is
(A) Nicotinamide dinucleotide phosphate
(B) Nicotine adenine dinuceotide phosphate
(C) Nicotinamide adenine dinucleotide phosphate
(D) None of the above
982.Wavelength of visible light is
(A) 200 - 400 nm
(B) 400 - 700 nm
(C) 700 - 900 nm
(D) 100 - 200 nm
983.The presence of sugar in onion leaves can be tested with
(A) iodine
(B) copper sulphate solution
(C) lime water
(D) benedict’s solution
984. Chemical reaction takes place during dark reaction of photosynthesis is
(A) photolysis
(B) hydrolysis
(C) carbon dioxide is bonded with RUBP
(D) nitrogen fixation
985 Dark reaction and light reaction of photosynthesis takes place in
(A) stroma and grana of chloroplast respectively
(B) grana and stroma of chloroplast respectively
(C) grana only
(D) stroma only
986.CO2 acceptor during dark reaction of photosynthesis is
(A) RUBP (B) PEP
(C) NADPH (D) ATP
987 Compensation point refers to the intensity of light at which
(A) Rate of respiration = rate of photosynthesis
(B) Rate of respiration > rate of photosynthesis
(C) Rate of respiration < Rate of photosynthesis
(D) None of the above is correct
988.Among the following which is a parasitic plant ?
(A) Plasmodium (B) Cuscuta
(C) Amoeba (D) Rhizobium
989.The nutrition in mucor is
(A) parasitic (B) autotrophic
(C) saprophytic (D) holozoic
990.In amoeba the digestion is intracellular because
(A) amoeba is unicellular
(B) amoeba is multicellular
(C) amoeba is found is pond
(D) amoeba is microscopic animal
991. Digestion of food in human starts from
(A) duodenum (B) small intestine
(C) mouth (D) large intestine
992.The digestion of food is completed in the
(A) ileum (B) duodenum
(C) stomach (D) large intestine
993.The most important function of villi in the small intestine is
(A) to provide strength to the intestine
(B) to provide space for capillaries and lacteals
(C) to provide increased surface area for absorption
of digested food
(D) to provide habitat for bacteria
994.Which of the following sections does not contain enzymes ?
(A) Bile
(B) Pancreatic juice
(C) Intestinal juice
(D) Saliva
995. Chewing is an example of
(A) chemical digestion
(B) mechanical digestion
(C) involuntary action
(D) hydrolysis
996. The final product of digestion of carbohydrates and
proteins are
(A) glycerol and amino acid respectively
(B) glucose and amino acids respectively
(C) amino acids and glycerol respectively
(D) amino acids and glucose respectively
997. In amoeba the digestion of food is
(A) extracellular (B) intracellular
(C) intercellular (D) none of the above
998. Through mastication of food is essential because
(A) mastication of food makes the teeth stronger
(B) it makes the process of swallowing the food
easier
(C) by this process bigger pieces of food are broken
down into smaller pieces.
(D) bigger pieces of food are broken down into
smaller pieces and saliva is properly mixed with
999.The wave of contractions that pushes the food
through the alimentary canal is called
(A) peritoneum (B) peristalsis
(C) cyclosis (D) polarisation
1000.In amoeba absorption of the digested nutrient occurs in
(A) contractile vacuole
(B) plasma membrane
(C) cytoplasm
(D) pseudopodia
1001.Coiled and well developed alimentary canal firs developed in
(A) Protozoans (B) Mammals
(C) Arthropods (D) Poriferans
1002.Digestion of starch starts from
(A) stomach
(B) intestine
(C) esophagus
(D) mouth
1003 The path taken by food material after ingestion is represented by
(A) Mouth Pharynx Oesophagus Stomach
(B) Mouth Pharynx Oesophagus Small Intestine
(C) Mouth Oesophagus Stomach Pharynx
(D) Oesophagus Mouth Pharynx Stomach
1004.Teeth involved in cutting of food material are called
A.canines
B.incisors
C.molars
D.premolars
1005.. The green colour of plants is due to the presence of
(a) chlorophyll (b) carotene
(c) xanthophyll (d) starch
1006. During respiration exchange of gases take place in [NCERT Exemplar]
(a) trachea and larynx (b) alveoli of lungs
(c) alveoli and throat (d) throat and larynx
1007.The correct sequence of anaerobic reactions in yeast is [NCERT Exemplar]
(a) Glucose Cytoplasm Pyruvate Mitochondria Ethanol + Carbon dioxide
(b) Glucose Cytoplasm Pyruvate Cytoplasm Lactic acid
(c) Glucose Cytoplasm Pyruvate Mitochondria Lactic acid
(d) Glucose Cytoplasm Pyruvate Cytoplasm Ethanol + Carbon dioxide
1008. In which of the following vertebrate group/groups, heart does not pump oxygenated blood to different parts of the body? [NCERT Exemplar]
(a) Pisces and amphibians (b) Amphibians and reptiles
(c) Amphibians only (d) Pisces only
1009.Blood from superior vena cava flows into
(a) right atrium (b) right ventricle (c) left atrium (d) left ventricle
1010Which is the first enzyme to mix with food in the digestive tract? [NCERT Exemplar]
(a) Pepsin (b) Cellulase (c) Amylase (d) Trypsin
1011.. In which part of the alimentary canal food is finally digested? [NCERT Exemplar]
(a) Stomach (b) Mouth cavity (c) Large intestine (d) Small intestine
1012.When air is blown from mouth into a test-tube containing lime water, the lime water turned
milky due to the presence of [NCERT Exemplar]
(a) oxygen (b) carbon dioxide
(c) nitrogen (d) water vapour
1013.Choose the correct path of urine in our body. [NCERT Exemplar]
(a) Kidney ureter urethra urinary bladder
(b) Kidney urinary bladder urethra ureter
(c) Kidney ureter urinary bladder urethra
(d) Urinary bladder kidney ureter urethra
1014.The internal (cellular) energy reserve in autotrophs is [NCERT Exemplar]
(a) glycogen (b) protein (c) starch (d) fatty acid
1015.Which is the correct sequence of parts in human alimentary canal? [NCERT Exemplar]
(a) Mouth stomach small intestine oesophagus large intestine
(b) Mouth oesophagus stomach large intestine small intestine
(c) Mouth stomach oesophagus small intestine large intestine
(d) Mouth oesophagus stomach small intestine large intestine
1016. If salivary amylase is lacking in the saliva, which of the following events in the mouth cavity
will be affected? [NCERT Exemplar]
(a) Proteins breaking down into amino acids
(b) Starch breaking down into sugars
(c) Fats breaking down into fatty acids and glycerol
(d) Absorption of vitamins
1018. A few drops of iodine solution were added to rice water. The solution turned blue-black in
colour. This indicates that rice water contains [NCERT Exemplar]
(a) complex proteins (b) simple proteins (c) fats (d) starch
1019.Which of the following is most appropriate for aerobic respiration? [NCERT Exemplar]
(a) Glucose Mitochondria Pyruvate Cytoplasm CO2 + H2O + Energy
(b) Glucose Cytoplasm Pyruvate Mitochondria CO2 + H2O + Energy
(c) Glucose Cytoplasm Pyruvate + Energy Mitochondria CO2 + H2O
(d) Glucose Cytoplasm Pyruvate + Energy Mitochondria CO2 + H2O + Energy
1020. Single circulation, i.e., blood flows through the heart only once during one cycle of passage
through the body, is exhibited by [NCERT Exemplar]
(a) Labeo, Chameleon, Salamander (b) Hippocampus, Exocoetus, Anabas
(c) Hyla, Rana, Draco (d) Whale, Dolphin, Turtle
1021.Lack of oxygen in muscles often leads to cramps among cricketers. This results due to
[NCERT Exemplar]
(a) conversion of pyruvate to ethanol
(b) conversion of pyruvate to glucose
(c) non conversion of glucose to pyruvate
(d) conversion of pyruvate to lactic acid
1022.The opening and closing of the stomatal pore depends upon [NCERT Exemplar]
(a) oxygen
(b) temperature
(c) water in guard cells
(d) concentration of CO2 in stomata
1023.The inner lining of stomach is protected by one of the following from hydrochloric acid.
Choose the correct one. [NCERT Exemplar]
(a) Pepsin (b) Mucus (c) Salivary amylase (d) Bile
1024.Rings of cartilage present in the throat ensure that
(a) air is filtered (b) air is at room temperature
C.larnnx don't collapse
D.wind pipe don't collapse
1025.Which of the following organisms absorbs nutrition with haustoria?
(a) A carnivore (b) A herbivore (c) A parasite
(d) A saprophyte
1026.The process by which Amoeba obtains food is called
(a) phagocytosis (b) assimilation (c) diffusion (d) absorption
1027.Which of the following is not a digestive enzyme contained in the pancreatic juice?
(i) Lipase (ii) Hydrochloric acid
(iii) Mucus (iv) Trypsin
(a) (i) and (ii) (b) (i) and (iv) (c) (ii) and (iii)
(d) (i) and (iii)
1028.The enzymes pepsin and trypsin are secreted respectively by
(a) stomach and pancreas
(b) salivary gland and stomach
(c) liver and pancreas
(d) liver and salivary gland
1029. Among the following choose the correct option which includes the organisms that have a
holozoic mode of nutrition:
(a) Plasmodium and Amoeba
(b) Parakeet and Amoeba
(c) Paramecium and Plasmodium
(d) Paramecium and Parasite
1030.Raw materials required in the autotrophic mode of nutrition involves:
(i) Carbon dioxide and water (ii) Chlorophyll
(iii) Nitrogen (iv) Sunlight
(a) (i), (ii) and (iii) (b) (i) and (ii) (c) (i), (ii) and (iv) (d) All (i), (ii), (iii) and (iv)
1031.The enzymes in pancreatic juice help in the digestion of
(a) fats and carbohydrates (b) proteins and fats
(c) proteins and carbohydrates (d) proteins, fats and carbohydrates
1032.Which of the following help in protecting the inner lining of the stomach from the harmful
effect of hydrochloric acid?
(a) Mucus (b) Pepsin (c) Trypsin (d) Bile
1032.Sometimes we get painful cramps in our leg muscles after running for a long time due to the accumulation of
(a) hydrochloric acid (b) fat (c) carbon dioxide (d) lactic acid
1033.The vein which brings clean blood from the lungs into the heart is known as
(a) pulmonary vein (b) hepatic vein
(c) superior vena cava (d) pulmonary artery
1034.. Movement of the synthesized products from the leaves to the roots and other parts of a plant’s body takes place through the phloem. This process is known as
(a) translocation (b) transpiration
(c) transportation (d) excretion
1025.During deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in the [NCERT Exemplar]
(a) cytoplasm (b) chloroplast (c) mitochondria (d) golgi body
1026.. Which among the following procedures is used for cleaning the blood of a person by
separating the waste substance from it?
(a) Kidney transplant (b) Blood transfusion
(c) Dialysis (d) Hydrolysis
1027.The excretory unit of the human excretory system is known as
(a) nephridia (b) neuron (c) nephron (d) kidneys
1028.Plants use the energy stored in ATP to accomplish the process of transportation of
(a) water and minerals (b) oxygen
(c) water, minerals and food (d) food
1029. Which among the following is necessary to carry out the blood coagulation in a cut or wound?
(a) White blood cells (b) Blood plasma (c) Platelets (d) Red blood cells
1030.Arteries and veins are connected by a network of extremely narrow tubes called
(a) sieve tubes (b) capillaries (c) vena cava (d) valves
1031.Which of the following are energy foods?
(a) Carbohydrates and fats
(b) Proteins and mineral salts
(c) Vitamins and minerals
(d) Water and roughage
1032.. In which mode of nutrition an organism derives its food from the body of another living
organism without killing it?
(a) Saprotrophic nutrition (b) Parasitic nutrition
(c) Holozoic nutrition (d) Autotrophic nutrition
1033. The mode of nutrition found in fungi is
(a) parasitic nutrition (b) holozoic nutrition
(c) autotrophic nutrition (d) saprotrophic nutrition
1034.. Roots of the plants absorb water from the soil through the process of
(a) diffusion (b) transpiration (c) osmosis (d) none of these
1035.. The site of photosynthesis in the cells of a leaf is
(a) chloroplast (b) mitochondria (c) cytoplasm (d) protoplasm
1036.n Amoeba, food is digested in the
(a) food vacuole (b) mitochondria (c) pseudopodia (d) chloroplast
1
1037.Which region of the alimentary canal absorbs the digested food?
(a) Stomach (b) Small intestine (c) Large intestine (d) Liver
1038.. The contraction and expansion movement of the walls of the food pipe is called
(a) translocation (b) transpiration
(c) peristaltic movement (d) digestion
1039 The exit of unabsorbed food material is regulated by
(a) liver (b) anus (c) small intestine (d) anal sphincter
1040.What are the products obtained by anaerobic respiration in plants?
(a) Lactic acid + Energy (b) Carbon dioxide + Water + Energy
(c) Ethanol + Carbon dioxide + Energy (d) Pyruvate
1041. The breakdown of pyruvate to give carbon dioxide, water and energy takes place in
(a) cytoplasm (b) mitochondria (c) chloroplast (d) nucleus
1042.Glycolysis process occurs in which part of the cell?
(a) Cytoplasm (b) Nucleus (c) Mitochondria (d) Chloroplast
1043 Name the substances whose build up in the muscles during vigorous physical exercise may cause cramps?
(a) Ethanol + Carbon dioxide + Energy
(b) Lactic acid + Energy
(c) Carbon dioxide + Water + Energy
(d) Pyruvate
1044.. Name the pores in a leaf through which respiratory exchange of gases takes place.
(a) Lenticels (b) Vacuoles (c) Xylem (d) Stomata
1045.The respiratory pigment in human beings is
(a) carotene (b) chlorophyll (c) haemoglobin (d) mitochondria
1046. Which plant tissue transports water and minerals from the roots to the leaf?
(a) Xylem (b) Phloem (c) Parenchyma (d) Collenchyma
1047.A blood vessel which pumps the blood from the heart to the entire body is called
(a) artery (b) capillary (c) vein (d) haemoglobin
1048. Name a circulatory fluid in the human body other than blood.
(a) Platelets (b) RBC (c) Lymph (d) Plasma
1049.Name the tube which connects the kidneys to the urinary bladder.
(a) Urethra (b) Nephron (c) Tubule (d) Ureter
1050.Which part of nephron allows the selective reabsorption of useful substances like glucose,
amino acids, salts and water into the blood capillaries?
(a) Tubule (b) Glomerulus (c) Bowman’s capsule (d) Ureter
1056.Where is the dirty blood in our body filtered?
(a) Heart (b) Lungs (c) Ureter (d) Kidneys
1057.. Autotrophic organisms include
(a) bacteria and virus (b) bacteria and fungi
(c) green plants and some bacteria (d) green plants and all bacteria
1058.Which of the following are chiefly digested in the stomach?
(a) Carbohydrates (b) Proteins (c) Lipids (d) Fats
1059.. From the given picture of the digestive system, identify the part labelled as gastric gland.
A in liver
B in dudenum
C in pancres
D in stimach
(a) A (b) B (c) C (d) D
1059. Large intestine in man mainly carries out
(a) absorption of water (b) assimilation
(c) digestion of fats (d) digestion of carbohydrates
1060. The part of the digestive system where no digestion takes place is
(a) ileum (b) stomach (c) mouth (d) oesophagus
1061.The fermentation of glucose by yeast normally yields
(a) alcohol, CO2 and 36 ATP (b) CO2, H2O and 36 ATP
(c) alcohol, CO2 and 2 ATP (d) lactic acid, CO2 and 2 ATP
1062.A large quantity of one of the following is removed from our body by lungs?
(a) CO2 and H2O (b) CO2 only (c) H2O only (d) Ammonia
1063.In respiration, air passes through
(a) Pharynx → nasal cavity → larynx → trachea bronchi → bronchioles
(b) Nasal cavity → pharynx → larynx → trachea → bronchi → bronchioles
(c) Larynx → nasal cavity → pharynx → trachea
(d) Larynx → pharynx → trachea → lungs
1064.. A biochemical compound that readily combines with oxygen and distributes it throughout the human body is
(a) water (b) urea (c) haemoglobin (d) acetylcholine
1065 The process in which loss of water takes place in the form of water vapour through stomata is called
(a) transportation (b) transpiration (c) guttation (d) translocation
1
1066.. In a closed circulatory system, blood is completely enclosed within
(a) vessels (b) heart (c) skeleton (d) sinuses
1067.. Normal blood pressure (systolic/diastolic) is
(a) 120/80 mm of Hg (b) 160/80 mm of Hg
(c) 120 60 mm of Hg (d) 180/80 mm of Hg
1068.. Blood pressure is measured by an instrument called
(a) barometer (b) sphygmomanometer(c) photometer (d) manometer
1069.Which of the following statements is not correct?
(a) Deoxygenated blood is poured into right atrium of heart.
(b) The excretory units of flatworms are flame cells.
(c) Human kidney has about 1 million nephridia.
(d) Tracheids and vessels are non-living conducting tissues.
1070.. The chlorophyll in photosynthesis is used for
(a) absorbing light
b) breaking down water molecule
(c) no function
(d) reduction of CO2
1p71.Proteins after digestion are converted into
(a) carbohydrates (b) small globules (c) amino acids (d) starch
1072.Carbohydrates in the plants are stored in the form of
(a) glycogen (b) starch (c) glucose (d) maltose
1073. Opening and closing of pores is a function performed by
(a) stomata (b) chlorophyll (c) chloroplast (d) guard cells
1074.. Which element is used in the synthesis of proteins?
(a) Hydrogen (b) Oxygen (c) Nitrogen (d) Carbon dioxide
1075.Temporary finger like extensions on Amoeba are called
(a) cell membrane (b) cell wall (c) pseudopodia (d) cilia
1076.. Bile juice is secreted by
(a) stomach (b) pancreas (c) small intestine (d) liver
1077.Which of these juices is secreted by pancreas?
(a) Trypsin (b) Pepsin (c) Bile juice (d) Both (a) and (b)
1078.Lipase acts on
(a) amino acids (b) fats (c) carbohydrates (d) all of these
1079.Blood consist of what fluid medium?
(a) Lymph (b) Platelets (c) Plasma (d) All of these
1080.. One cell-thick vessels are called
(a) arteries (b) veins (c) capillaries (d) pulmonary artery
1081. The image shows the process of making food by a plant. Which statement can be concluded from the image?
(a) Plants absorb CO2 from air and H2O from the
soil as raw materials and convert them into
glucose.
(b) Plants absorb O2 from air and minerals from
the soil as raw materials and convert them into
heat energy.
(c) Plants absorb O2 from air and glucose from
the soil as raw materials and convert them into
light energy.
(d) Plants absorb CO2 from the soil and H2O from air as raw materials and convert them into
glucose.
1082.. A student sets up an experiment to study the importance of nutrition in plants. The student takes 2 pots, pot 1 and pot 2 each with the same healthy plant. Both the pots were placed in the garden and watered properly. Pot 1 was kept as such, while pot 2 was kept in an air tight glass box with caustic soda. Caustic soda absorbs carbon dioxide present in the surrounding. After 2 days, the student observes that the plant kept in the garden is healthy while the plant placed in container shed leaves and droops. What is the likely reason for this observation?
(a) Absence of oxygen for survival
(b) Absorption of light by caustic soda restricting growth
(c) Inability to perform photosynthesis
(d) Lack of nutrients in the soil
1083.. Which of the equation show correct conversion of CO2 and H2O into carbohydrates in plants?
(a) 6CO2 + 12H2O
Heat energy
Chlorophyll
( ) u e cosGl
C H6 12 6 O + C6H12O6 + 6O2 + 6H2O
(b) 6CO2 + 6H2O
Sunlight
Chlorophyll
( ) u e cosGl
C H6 12 6 O + 6O2 + 12H2O
(c) 6CO2 + 12H2O
Sunlight
Chlorophyll
( ) u e cosGl
C H6 12 6 O + 6O2 + 6H2O
(d) 6CO2 + 6H2O
Heat energy
Chlorophyll
( ) u e cosGl
C H6 12 6 O +C6H12O6 + 6O2 + 12H2O
1084.A student sets up an experiment to study the photosynthesis in plants. Tstudent destarched
a potted plant by keeping it in a dark room for 3 days. Half of the portion of destarched leaf
was placed in a bottle containing caustic potash (absorbs CO2) as shown.
The student then places the plant in light
and tests the leaf after 5 hours for the
presence of starch. The portions inside
the bottle shows negative starch test by
reflecting no change in colour when react
with iodine, however, other upper portions
of the leaf gave positive starch test showing
blue-black colour with iodine. What can be
evaluated from this experiment?
(a) Lack of carbon dioxide increases amount
of starch in plant.
(b) Carbon dioxide is necessary for preparing carbohydrate.
(c) Carbon dioxide is directly linked with the colour of leaf.
(d) Lack of carbon dioxide slows the process of photosynthesis.
1085. The image shows the bread moulds on a bread.
How these fungi obtain nutrition?
(a) By using nutrients from the bread to prepare their own
food.
(b) By allowing other organisms to grow on the bread and
then consuming them.
(c) By breaking down the nutrients of bread and then
absorbing them.
(d) By eating the bread on which it is growing.
1086.. The image shows how Amoeba obtains nutrition.Food particle Nucleus Food particle Food vacuole Pseudopodia
How this process is advantageous for Amoeba?
(a) Capturing of food takes less time. (b) More amount of food can be consumed.
(c) Complex food can be digested easily. (d) Fast distribution of nutrition within the body.
1087.. The image shows the human digestive system.
]
Mouth
Tongue
Oseophagus
Stomach
Pancreas
Small intestine
Rectum
Anus
Large
intestine
Gall bladder
Liver
Pharynx
Digestion of food starts from which organ of the digestive system?
(a) Mouth due to the presence of saliva.
(b) Pancreas that releases juices for fat breakdown.
(c) Oesophagus that moves the food in gut.
(d) Stomach which helps in mixing food with digestive juices.
1088. The image shows a cross section of small intestine.
What will be the likely happen if the number of villi
increases in the intestine?
(a) Increase in the absorption of food.
(b) Fast breakdown of larger food particles into smaller ones.
(c) Increase in flow of blood in the small intestine.
(d) Fast elimination of waste from the body
1089.. An incomplete equation for the digestion of starch using saliva is shown as:
Saliva + Starch (in test tube) →
What will be the likely outcome of this?
(a) Saliva will breakdown starch into simple protein molecules.
(b) Saliva will convert starch into complex fat molecules.
(c) Saliva will breakdown starch into simple sugar molecules.
(d) Saliva will convert starch into complex sugar molecules.
1090.. A student sets up an experiment to study the role of enzymes in digestion of food.
Egg white
+ pepsin
Egg white
+ pepsin + HCl
A B
In which test tube, the digestion of protein will occur?
(a) Test tubes A as pepsin will breakdown protein into simple molecules.
(b) Test tube B as HCl will breakdown protein into simple molecules.
(c) Test tube A as pepsin will breakdown into simple molecules.
(d) Test tube B as HCl will activate pepsin for breakdown of protein into simple molecules.
1091.The image shows the flow diagram for the breakdown of glucose in yeast. Under
which condition these types of products are obtained?
(a) In the presence of carbon dioxide (b) In the absence of oxygen
(c) In the presence of oxygen (d) In the absence of carbon dioxide
1092.. Which pathway will occur in the cell of an athlete who is performing 100 m
sprint?
(a) Glucose Pyruvate Ethanol CO Energy c o
2
In ytoplasm Absence of xygen + +
(b) Glu e cos Pyruvate Lactic acid Energy ( )
In cytoplasm
in human muscle cells
Lack of oxygen +
(c) Glucose
Lactic acid
+ Energy
In cytoplasm Pyruvate
Prsence of
oxygen CO2 + Water
(in mitochondria) +Energy
Lack of oxygen
(in human
muscle cells)
(d) Glucose
Lactic acid
+ Energy
In cytoplasm Pyruvate
Absence of
oxygen Ethanol + CO2
+Energy
1093. Which of the following is an incorrect statement? [NCERT Exemplar]
(a) Organisms grow with time
(b) Organisms must repair and maintain their structure
(c) Movement of molecules does not take place among cells
(d) Energy is essential for life processes
1094. Which of the following equations is the summary of photosynthesis? [NCERT Exemplar]
(a) 6CO2 + 12H2O → C6H12O6 + 6O2+ 6H2O
(b) 6CO2 + H2O + Sunlight → C6H12O6 + O2+ 6H2O
(c) 6CO2 + 12H2O + Chlorophyll + Sunlight → C6H12O6 + 6O2+ 6H2O
(d) 6CO2 + 12H2O + Chlorophyll + Sunlight → C6H12O6 + 6CO2+ 6H2O
1095. Choose the event that does not occur in photosynthesis [NCERT Exemplar]
(a) Absorption of light energy by chlorophyll
(b) Reduction of carbon dioxide to carbohydrates
(c) Oxidation of carbon to carbon dioxide
(d) Conversion of light energy to chemical energy
1096.. Choose the forms in which most plants absorb nitrogen [NCERT Exemplar]
(i) Proteins (ii) Nitrates and Nitrites
(iii) Urea (iv) Atmospheric nitrogen
(a) (i) and (ii) (b) (ii) and (iii) (c) (iii) and (iv) (d) (i) and (iv)
1097. Which of the following statement(s) is (are) correct? [NCERT Exemplar]
(i) Pyruvate can be converted into ethanol and carbon dioxide by yeast
(ii) Fermentation takes place in aerobic bacteria
(iii) Fermentation takes place in mitochondria
(iv) Fermentation is a form of anaerobic respiration
(a) (i) and (iii) (b) (ii) and (iv) (c) (i) and (iv)
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