1. A
   She should take from tip of the leaf
2. B
   She had taken the correct surface for leaf peel
3. C
   She should not take from leaf surface
4. D
   She should take from upper surface

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1. A
   Stomach and anus
2. B
   Oesophagus and stomach
3. C
   Stomach and small intestine
4. D
   Small intestine and large intestine

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1. A
   Banana tree
2. B
   Mango tree
3. C
   Chlamydomonas
4. D
   Banyan tree

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1. A
   Valves in heart
2. B
   Thin walls of atria
3. C
   Thick muscular walls of ventricles
4. D
   All of the these

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1. A
   Salivary amylase
2. B
   Pepsin
3. C
   Mucus
4. D
   Bile

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1. A
   Carbon dioxide
2. B
   Water
3. C
   Glucose
4. D
   Chlorophyll

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1. A
   (ii) and (iv) only
2. B
   (ii) and (iii) only
3. C
   (ii) only
4. D
   (ii) and (iii) only

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1. A
   Invertase
2. B
   Diastase
3. C
   Zymase
4. D
   Maltase

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1. A
   Into the cell
2. B
   Out of the cell
3. C
   movement of water
4. D
   No movement of water

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1. A
   Ureter
2. B
   Urethra
3. C
   Neurons
4. D
   nephrons

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1. A
   A potted plant with green leaves
2. B
   Detached green leaves
3. C
   A plant with variegated leaves
4. D
   Germinating seeds

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1. A
   lifted ribs and curve/dome shaped diaphragm.
2. B
   relaxed ribs and curve/dome shaped diaphragm.
3. C
   relaxed ribs and flattened diaphragm.
4. D
   lifted ribs and flattened diaphragm.

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1. A
   Hippocampus, Exocoetus, Anabas
2. B
   Whale, Dolphin, Turtle
3. C
   Labeo, Chameleon, Salamander
4. D
   Hyla, Rana, Draco

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1. A
   (1) Pyruvate (3 carbon molecules) (2) Water (3) Presence of oxygen (4) In Mitochondria (5) Carbon dioxide (6) Energy
2. B
   (1) Pyruvate (3 carbon molecules) (2) Energy (3) Presence of oxygen (4) In Mitochondria (5) Carbon dioxide (6) Water
3. C
   (1) Pyruvate (3 carbon molecules) (2) Energy (3) Carbon dioxide (4) In Mitochondria (5) Presence of oxygen (6) Water
4. D
   (1) Carbon dioxide (2) Energy (3) Presence of oxygen (4) In Mitochondria (5) Pyruvate (3 carbon molecules) (6) Water

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1. A
   exactly twice as much in B as in A
2. B
   more in B than in A
3. C
   more in A than in B
4. D
   the same in both A and B

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1. A
   10
2. B
   20
3. C
   45
4. D
   50

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1. A
   Set - up of student A
2. B
   Set - up of student C
3. C
   Set - up of student B
4. D
   Set - up of student D

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1. A
   10 raisins absorbed water, 10 did not
2. B
   15 raisins absorbed water, 5 did not
3. C
   8 raisins absorbed water, 12 did not
4. D
   all the 20 raisins absorbed water

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1. A
   $\frac{B-A}{A} \times 100$
2. B
   $\frac{B-A}{B} \times 100$
3. C
   $(B-A) \times 100$
4. D
   $\frac{B-A}{A} \times \frac{1}{100}$

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1. A
   (B)
2. B
   (D)
3. C
   (C)
4. D
   (A)

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1. A
   (D)
2. B
   (B)
3. C
   (A)
4. D
   (C)

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1. A
   Gurdev
2. B
   Jagdeep
3. C
   Jagdeep, Gautam and Gurdev
4. D
   Jagdeep

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1. A
   shrunken in both
2. B
   shrunken in A and swollen in B
3. C
   swollen in both
4. D
   swollen in A and shrunken in B

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1. A
   more in Anurag beaker
2. B
   twice in Anurag to Anshuman's beaker
3. C
   same in both cases
4. D
   more in Anshumans beaker

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1. A
   CO₂ is necessary for photosynthesis
2. B
   Light is necessary for photosynthesis
3. C
   Chlorophyll is necessary for photosynthesis
4. D
   Water is necessary for photosynthesis

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