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

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1. A
   Metaphase I
2. B
   Metaphase II
3. C
   Anaphase II
4. D
   Telophase

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1. A
   680 nm
2. B
   700 nm
3. C
   660 nm
4. D
   780 nm

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1. A
   Both Statement I and Statement II are true
2. B
   Both Statement I and Statement II are false
3. C
   Statement I is correct but Statement II is false
4. D
   Statement I is incorrect but Statement II is true

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1. A
   Thomas Hunt Morgan
2. B
   Sutton and Boveri
3. C
   Alfred Sturtevant
4. D
   Henking

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1. A
   Presence of several alleles of a single gene controlling a single crossover
2. B
   Presence of two alleles, each of the two genes controlling a single trait
3. C
   A single gene affecting multiple phenotypic expression
4. D
   More than two genes affecting a single character

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1. A
   All genes that are expressed as RNA.
2. B
   All genes that are expressed as proteins.
3. C
   All genes whether expressed or unexpressed.
4. D
   Certain important expressed genes.

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1. A
   12 ATP and 12 $NADPH_2$
2. B
   18 ATP and 12 $NADPH_2$
3. C
   12 ATP and 16 $NADPH_2$
4. D
   18 ATP and 16 $NADPH_2$

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1. A
   Insect pollinated plants
2. B
   Bird pollinated plants
3. C
   Bat pollinated plants
4. D
   Wind pollinated plants

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

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1. A
   Excessive growth of planktonic algae consume a lot of oxygen causing the death of aquatic organisms
2. B
   Algal blooms caused by excess of organic matter in water improve water quality and promote fisheries
3. C
   Water hyacinth grows abundantly in eutrophic water bodies and leads to an imbalance in the ecosystem dynamics of the water body
4. D
   The amount of some toxic substances of industrial waste water increases in the organisms at successive trophic levels

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1. A
   Both A and R are true and R is the correct explanation of A
2. B
   Both A and R are true but R is NOT the correct explanation of A
3. C
   A is true but R is false
4. D
   A is false but R is true

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

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1. A
   80
2. B
   60
3. C
   40
4. D
   20

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

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1. A
   Both A and R are true and R is the correct explanation of A
2. B
   Both A and R are true but R is NOT the current explanation of A
3. C
   A is true but R is false
4. D
   A is false but R is true

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

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1. A
   Succinic dehydrogenase
2. B
   Amylase
3. C
   Lipase
4. D
   Dinitrogenase

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

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1. A
   Membrane, proton pump, proton gradient, ATP synthase
2. B
   Membrane, proton pump, proton gradient, NADP synthase
3. C
   Proton pump, electron gradient, ATP synthase
4. D
   Proton pump, electron gradient, NADP synthase

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

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

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1. A
   Both Statement I and Statement II are true.
2. B
   Both Statement I and Statement II are false.
3. C
   Statement I is correct but Statement II is false.
4. D
   Statement I is incorrect but Statement II is true.

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

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

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