1. Statement I: A sleeping person is still 5. A potted plant is kept in darkness for three
considered alive. days before performing the starch test. The main
Statement II: Molecular movements continue in purpose of this step is to
the body even during sleep.
(a) increase chlorophyll content.
(a) Both Statement I and Statement II are true, and (b) remove all previously stored starch.
Statement II correctly explains Statement I. (c) increase water absorption.
(b) Both Statement I and Statement II are true, but (d) stop respiration completely.
Statement II does not explain Statement I.
(c) Statement I is true, but Statement II is false.
(d) Statement I is false, but Statement II is true.
6. During the variegated leaf experiment, only
the green regions turn blue-black after iodine
treatment. This observation proves that
2. A student observes that an amoeba and a
human both require oxygen for respiration. (a) starch is present only in yellow regions.
However, amoeba does not possess a respiratory (b) chlorophyll is necessary for photosynthesis.
organ. Which statement best explains this (c) iodine produces starch.
difference? (d) chlorophyll stores iodine.
(a) Amoeba does not respire.
(b) Amoeba obtains energy directly from sunlight.
(c) Every part of amoeba is in direct contact with 7. Match Column I with Column II.
the environment.
(d) Amoeba stores oxygen permanently inside the Column I Column II
cell. P. Chlorophyll 1. Absorption of CO₂
Q. Stomata 2. Light absorption
R. Guard cells 3. Opening and closing of pore
3. Which of the following combinations includes S. Chloroplast 4. Organelle containing chlorophyll
all the life processes essential for maintenance of
life in multicellular organisms? Choose the correct option.
(a) Nutrition, respiration, transportation, excretion (a) P–2, Q–1, R–3, S–4
(b) Growth, reproduction, movement, digestion (b) P–4, Q–3, R–2, S–1
(c) Reproduction, locomotion, growth, excretion (c) P–1, Q–2, R–4, S–3
(d) Digestion, movement, response, reproduction (d) P–2, Q–4, R–1, S–3
4. Statement I: Diffusion alone is insufficient in 8. Two identical plants are placed under
humans for transport of oxygen. separate bell jars. One jar contains potassium
Statement II: Most cells in the human body are not hydroxide (KOH). After exposure to sunlight,
directly exposed to the external environment. the leaf from that plant shows no starch. The
most appropriate conclusion is that
(a) Both true; Statement II explains Statement I.
(b) Both true; Statement II does not explain (a) KOH prevents sunlight from entering.
Statement I. (b) KOH destroys chlorophyll.
(c) Statement I true; Statement II false. (c) Carbon dioxide is necessary for photosynthesis.
(d) Statement I false; Statement II true. (d) Oxygen is necessary for photosynthesis.
9. Which sequence correctly represents the
major events of photosynthesis?
,(a) Reduction of CO₂ → Absorption of light →
Splitting of water
(b) Splitting of water → Reduction of CO₂ → 13. A lion and a cow have different digestive
Absorption of light adaptations because
(c) Absorption of light → Conversion to chemical
energy → Reduction of CO₂ (a) both consume identical food.
(d) Conversion to chemical energy → Absorption (b) their food sources differ in nature.
of light → Reduction of CO₂ (c) cows do not require digestion.
(d) lions perform photosynthesis.
10. Desert plants take in carbon dioxide at night
and use it during the day. This adaptation 14. Statement I: Some organisms digest food
mainly helps to outside the body and absorb the simpler products.
Statement II: Fungi such as mushrooms and bread
(a) reduce loss of water. mould follow this mode of nutrition.
(b) increase oxygen release at night.
(c) stop respiration during daytime. (a) Both true; II explains I.
(d) increase nitrogen absorption. (b) Both true; II is an example of I.
(c) I true; II false.
(d) I false; II true.
Questions 11–15: Multiple Statement Type
11. Consider the following statements regarding 15. Which organism uses temporary finger-like
autotrophic nutrition: projections to engulf food?
A. Carbon dioxide is obtained from air. (a) Paramoecium
B. Water is absorbed by roots. (b) Yeast
C. Chlorophyll absorbs light energy. (c) Amoeba
D. Proteins are the immediate product of (d) Cuscuta
photosynthesis.
Choose the correct answer.
Questions 16–20: Human Nutrition
(a) A, B and C only
(b) A and D only 16. In Activity 5.3, starch solution is taken in two
(c) B and D only test tubes. Saliva is added only to test tube A.
(d) A, B, C and D After iodine is added, test tube B turns blue-
black while test tube A does not. This indicates
that
12. Which of the following organisms exhibit (a) saliva produces starch.
heterotrophic nutrition? (b) saliva digests starch.
(c) saliva produces iodine.
A. Lion (d) saliva digests proteins.
B. Mushroom
C. Green plant
D. Amoeba
17. Match the digestive component with its
(a) A, B and D only primary role.
(b) A and C only
(c) B and C only Column I Column II
(d) A, B, C and D P. Salivary amylase 1. Protein digestion
Q. Pepsin 2. Fat emulsification
, Column I Column II Statement II does not explain Statement I.
R. Bile 3. Starch digestion (c) Statement I is true but Statement II is false.
(d) Statement I is false but Statement II is true.
S. Lipase 4. Fat digestion
(a) P–3, Q–1, R–2, S–4
(b) P–1, Q–2, R–3, S–4 22. A student blows air into freshly
(c) P–2, Q–4, R–1, S–3
prepared lime water through a straw. The
(d) P–4, Q–3, R–2, S–1
lime water turns milky. This observation
indicates that exhaled air contains
18. A patient has poor absorption of digested (a) Oxygen
food despite normal digestion. Which structure (b) Nitrogen
is most likely damaged? (c) Carbon dioxide
(d) Water vapour
(a) Alveoli
(b) Villi
(c) Stomata
(d) Nephrons 23. Which of the following sequences
correctly represents the pathway of air in
humans?
19. Why does bile improve the digestion of fats? (a) Nostrils → Trachea → Pharynx → Bronchi →
Alveoli
(a) It converts fats directly into glucose.
(b) It digests fats completely. (b) Nostrils → Pharynx → Trachea → Bronchi →
(c) It breaks large fat globules into smaller droplets. Alveoli
(d) It converts proteins into amino acids.
(c) Nostrils → Bronchi → Trachea → Alveoli
(d) Nostrils → Pharynx → Bronchi → Trachea →
20. Assertion (A): Herbivores generally possess a Alveoli
longer small intestine than carnivores.
Reason (R): Cellulose-rich food requires more time
and surface area for digestion. 24. Statement I:
(a) Both A and R are true and R explains A. Alveoli are present in large numbers in the lungs.
(b) Both A and R are true but R does not explain A.
(c) A is true but R is false. Statement II:
(d) A is false but R is true.
A large surface area increases the efficiency of
21. Statement I: gaseous exchange.
Cellular respiration is an energy-releasing process. (a) Both true and II explains I
Statement II: (b) Both true but II does not explain I
The energy released during respiration is (c) I true, II false
immediately stored as ATP.
(d) I false, II true
(a) Both Statement I and Statement II are true and
Statement II explains Statement I.
(b) Both Statement I and Statement II are true but
considered alive. days before performing the starch test. The main
Statement II: Molecular movements continue in purpose of this step is to
the body even during sleep.
(a) increase chlorophyll content.
(a) Both Statement I and Statement II are true, and (b) remove all previously stored starch.
Statement II correctly explains Statement I. (c) increase water absorption.
(b) Both Statement I and Statement II are true, but (d) stop respiration completely.
Statement II does not explain Statement I.
(c) Statement I is true, but Statement II is false.
(d) Statement I is false, but Statement II is true.
6. During the variegated leaf experiment, only
the green regions turn blue-black after iodine
treatment. This observation proves that
2. A student observes that an amoeba and a
human both require oxygen for respiration. (a) starch is present only in yellow regions.
However, amoeba does not possess a respiratory (b) chlorophyll is necessary for photosynthesis.
organ. Which statement best explains this (c) iodine produces starch.
difference? (d) chlorophyll stores iodine.
(a) Amoeba does not respire.
(b) Amoeba obtains energy directly from sunlight.
(c) Every part of amoeba is in direct contact with 7. Match Column I with Column II.
the environment.
(d) Amoeba stores oxygen permanently inside the Column I Column II
cell. P. Chlorophyll 1. Absorption of CO₂
Q. Stomata 2. Light absorption
R. Guard cells 3. Opening and closing of pore
3. Which of the following combinations includes S. Chloroplast 4. Organelle containing chlorophyll
all the life processes essential for maintenance of
life in multicellular organisms? Choose the correct option.
(a) Nutrition, respiration, transportation, excretion (a) P–2, Q–1, R–3, S–4
(b) Growth, reproduction, movement, digestion (b) P–4, Q–3, R–2, S–1
(c) Reproduction, locomotion, growth, excretion (c) P–1, Q–2, R–4, S–3
(d) Digestion, movement, response, reproduction (d) P–2, Q–4, R–1, S–3
4. Statement I: Diffusion alone is insufficient in 8. Two identical plants are placed under
humans for transport of oxygen. separate bell jars. One jar contains potassium
Statement II: Most cells in the human body are not hydroxide (KOH). After exposure to sunlight,
directly exposed to the external environment. the leaf from that plant shows no starch. The
most appropriate conclusion is that
(a) Both true; Statement II explains Statement I.
(b) Both true; Statement II does not explain (a) KOH prevents sunlight from entering.
Statement I. (b) KOH destroys chlorophyll.
(c) Statement I true; Statement II false. (c) Carbon dioxide is necessary for photosynthesis.
(d) Statement I false; Statement II true. (d) Oxygen is necessary for photosynthesis.
9. Which sequence correctly represents the
major events of photosynthesis?
,(a) Reduction of CO₂ → Absorption of light →
Splitting of water
(b) Splitting of water → Reduction of CO₂ → 13. A lion and a cow have different digestive
Absorption of light adaptations because
(c) Absorption of light → Conversion to chemical
energy → Reduction of CO₂ (a) both consume identical food.
(d) Conversion to chemical energy → Absorption (b) their food sources differ in nature.
of light → Reduction of CO₂ (c) cows do not require digestion.
(d) lions perform photosynthesis.
10. Desert plants take in carbon dioxide at night
and use it during the day. This adaptation 14. Statement I: Some organisms digest food
mainly helps to outside the body and absorb the simpler products.
Statement II: Fungi such as mushrooms and bread
(a) reduce loss of water. mould follow this mode of nutrition.
(b) increase oxygen release at night.
(c) stop respiration during daytime. (a) Both true; II explains I.
(d) increase nitrogen absorption. (b) Both true; II is an example of I.
(c) I true; II false.
(d) I false; II true.
Questions 11–15: Multiple Statement Type
11. Consider the following statements regarding 15. Which organism uses temporary finger-like
autotrophic nutrition: projections to engulf food?
A. Carbon dioxide is obtained from air. (a) Paramoecium
B. Water is absorbed by roots. (b) Yeast
C. Chlorophyll absorbs light energy. (c) Amoeba
D. Proteins are the immediate product of (d) Cuscuta
photosynthesis.
Choose the correct answer.
Questions 16–20: Human Nutrition
(a) A, B and C only
(b) A and D only 16. In Activity 5.3, starch solution is taken in two
(c) B and D only test tubes. Saliva is added only to test tube A.
(d) A, B, C and D After iodine is added, test tube B turns blue-
black while test tube A does not. This indicates
that
12. Which of the following organisms exhibit (a) saliva produces starch.
heterotrophic nutrition? (b) saliva digests starch.
(c) saliva produces iodine.
A. Lion (d) saliva digests proteins.
B. Mushroom
C. Green plant
D. Amoeba
17. Match the digestive component with its
(a) A, B and D only primary role.
(b) A and C only
(c) B and C only Column I Column II
(d) A, B, C and D P. Salivary amylase 1. Protein digestion
Q. Pepsin 2. Fat emulsification
, Column I Column II Statement II does not explain Statement I.
R. Bile 3. Starch digestion (c) Statement I is true but Statement II is false.
(d) Statement I is false but Statement II is true.
S. Lipase 4. Fat digestion
(a) P–3, Q–1, R–2, S–4
(b) P–1, Q–2, R–3, S–4 22. A student blows air into freshly
(c) P–2, Q–4, R–1, S–3
prepared lime water through a straw. The
(d) P–4, Q–3, R–2, S–1
lime water turns milky. This observation
indicates that exhaled air contains
18. A patient has poor absorption of digested (a) Oxygen
food despite normal digestion. Which structure (b) Nitrogen
is most likely damaged? (c) Carbon dioxide
(d) Water vapour
(a) Alveoli
(b) Villi
(c) Stomata
(d) Nephrons 23. Which of the following sequences
correctly represents the pathway of air in
humans?
19. Why does bile improve the digestion of fats? (a) Nostrils → Trachea → Pharynx → Bronchi →
Alveoli
(a) It converts fats directly into glucose.
(b) It digests fats completely. (b) Nostrils → Pharynx → Trachea → Bronchi →
(c) It breaks large fat globules into smaller droplets. Alveoli
(d) It converts proteins into amino acids.
(c) Nostrils → Bronchi → Trachea → Alveoli
(d) Nostrils → Pharynx → Bronchi → Trachea →
20. Assertion (A): Herbivores generally possess a Alveoli
longer small intestine than carnivores.
Reason (R): Cellulose-rich food requires more time
and surface area for digestion. 24. Statement I:
(a) Both A and R are true and R explains A. Alveoli are present in large numbers in the lungs.
(b) Both A and R are true but R does not explain A.
(c) A is true but R is false. Statement II:
(d) A is false but R is true.
A large surface area increases the efficiency of
21. Statement I: gaseous exchange.
Cellular respiration is an energy-releasing process. (a) Both true and II explains I
Statement II: (b) Both true but II does not explain I
The energy released during respiration is (c) I true, II false
immediately stored as ATP.
(d) I false, II true
(a) Both Statement I and Statement II are true and
Statement II explains Statement I.
(b) Both Statement I and Statement II are true but
