1. A
   D, A, C, B
2. B
   B, D, A, C
3. C
   B, D, C, A
4. D
   A, D, C, B

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1. A
   B, D and E only
2. B
   B, C and E only
3. C
   A, B and C only
4. D
   C, D and E only

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1. A
   A, B, C and E only
2. B
   B, C, D and E only
3. C
   A, B, C and D only
4. D
   A, B, D and E only

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1. A
   Redifferentiation
2. B
   Elasticity
3. C
   Dedifferentiation
4. D
   Plasticity

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1. A
   C and D only
2. B
   B and C only
3. C
   A and C only
4. D
   A and B only

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1. A
   Over-exploitation; Alien species invasions; Air pollution; Co-extinctions
2. B
   Habitat loss and fragmentation; Air pollution; Water pollution; Co-extinctions
3. C
   Habitat loss and fragmentation; over-exploitation; Alien species invasions; Co-extinctions
4. D
   Over-exploitation; Alien species invasions; Soil pollution; Co-extinctions

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1. A
   A-IV, B-II, C-I, D-III
2. B
   A-II, B-III, C-IV, D-I
3. C
   A-III, B-I, C-IV, D-II
4. D
   A-I, B-IV, C-III, D-II

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1. A
   Synergid
2. B
   Central cell
3. C
   Zygote
4. D
   Primary endosperm cell

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1. A
   Autogamy
2. B
   Xenogamy
3. C
   Geitonogamy
4. D
   Cleistogamy

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1. A
   A-II, B-IV, C-I, D-III
2. B
   A-I, B-III, C-II, D-IV
3. C
   A-III, B-I, C-IV, D-II
4. D
   A-IV, B-II, C-I, D-III

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1. A
   A, B, C, D and E
2. B
   B, C and D only
3. C
   A, B, D and E only
4. D
   A, B and E only

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1. A
   A-III, B-IV, C-II, D-I
2. B
   A-I, B-II, C-III, D-IV
3. C
   A-IV, B-III, C-II, D-I
4. D
   A-III, B-II, C-IV, D-I

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1. A
   B and D only
2. B
   A and B only
3. C
   B and C only
4. D
   A and D only

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1. A
   Thalassemia
2. B
   Sickle-cell anaemia
3. C
   Phenylketonuria
4. D
   Haemophilia

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1. A
   A-III, B-II, C-IV, D-I
2. B
   A-IV, B-II, C-I, D-III
3. C
   A-II, B-III, C-IV, D-I
4. D
   A-II, B-III, C-I, D-IV

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1. A
   A, C, E, B, D
2. B
   C, A, B, D, E
3. C
   A, D, B, E, C
4. D
   C, E, D, B, A

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1. A
   A, B, C, D, E
2. B
   E, A, C, D, B
3. C
   C, B, E, A, D
4. D
   C, A, B, E, D

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1. A
   E, D, B, A, C
2. B
   A, B, C, D, E
3. C
   C, A, B, D, E
4. D
   E, C, D, B, A

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1. A
   Ampicillin and tetracycline
2. B
   Ampicillin
3. C
   Tetracycline
4. D
   Gentamycin

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1. A
   Transferases
2. B
   Isomerases
3. C
   Lyases
4. D
   Ligases

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1. A
   Schwann cell
2. B
   Pre-synaptic membrane
3. C
   Myelin sheath
4. D
   Post-synaptic membrane

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1. A
   25%
2. B
   0%
3. C
   75%
4. D
   50%

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1. A
   A-III, B-IV, C-I, D-II
2. B
   A-III, B-I, C-IV, D-II
3. C
   A-I, B-III, C-II, D-IV
4. D
   A-I, B-II, C-III, D-IV

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1. A
   Flippers of penguins and dolphins
2. B
   Eyes of octopuses and mammals
3. C
   Fore limbs of whales and bats
4. D
   Wings of butterflies and birds

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1. A
   B and C only
2. B
   C and E only
3. C
   A and B only
4. D
   B and D only

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