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

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1. A
   E $\rightarrow$ C $\rightarrow$ B $\rightarrow$ A $\rightarrow$ D
2. B
   B $\rightarrow$ C $\rightarrow$ A $\rightarrow$ E $\rightarrow$ D
3. C
   A $\rightarrow$ E $\rightarrow$ B $\rightarrow$ D $\rightarrow$ C
4. D
   B $\rightarrow$ E $\rightarrow$ C $\rightarrow$ A $\rightarrow$ D

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

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1. A
   Artificial selection
2. B
   Genetic drift
3. C
   Convergent evolution
4. D
   Adaptive radiation

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

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1. A
   Transferases
2. B
   Oxidoreductases
3. C
   Dehydrogenases
4. D
   Lyases

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

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

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

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1. A
   Adhering junctions facilitate the cells to communicate with each other.
2. B
   Tight junctions help to stop substances from leaking across a tissue.
3. C
   Tight junctions help to perform cementing to keep neighbouring cells together.
4. D
   Gap junctions help to create gap between the cells and tissues.

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1. A
   Bam HI and Sal I
2. B
   Sal I and Pst I
3. C
   Pst I and Pvu I
4. D
   Pvu I and Bam HI

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

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

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

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

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

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

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

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

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

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1. A
   D $\rightarrow$ C $\rightarrow$ E $\rightarrow$ A $\rightarrow$ B
2. B
   C $\rightarrow$ E $\rightarrow$ B $\rightarrow$ A $\rightarrow$ D
3. C
   C $\rightarrow$ E $\rightarrow$ A $\rightarrow$ D $\rightarrow$ B
4. D
   A $\rightarrow$ C $\rightarrow$ E $\rightarrow$ D $\rightarrow$ B

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

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

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

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1. A
   Palaemon, Nereis, Balanoglossus
2. B
   Hirudinaria, Bombyx, Salpa
3. C
   Anopheles, Limax, Limulus
4. D
   Pheretima, Musca, Pila

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