Choose the correct answer from the options given below:
1. A - (I); B - (IV); C - (II); D - (III)
2. A - (III); B - (IV); C - (I); D - (II)
3. A - (I); B - (IV); C - (III); D - (II)
4. A - (III); B - (IV); C - (II); D - (I)
Subtopic: Â Asexual Reproduction |
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Assertion(A): The gametes of a few algae groups are called homogametes.
Reason(R): They are very similar in appearance.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Reproduction |
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Assertion(A): The process where gametes are fused in an external environment is called internal syngamy.
Reason(R): Higher plants show internal fertilisation.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Sexual Reproduction |
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Assertion(A): Continuous breeders stay reproductively active throughout their reproductive phase.
Reason(R): Seasonal breeders wait for favorable seasons in their reproductive phase.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Reproduction |
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Assertion(A): The chances of survival of new organisms are great in the case of oviparous animals.
Reason(R): We see proper embryonic care and protection in the case of viviparous animals.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Sexual Reproduction |
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Assertion(A): Water hyacinth is an exotic species introduced in India.
Reason(R): It has beautiful flowers and the shape of leaves.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Reproduction |
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Assertion(A): Sexual reproduction produces non-identical offspring to parents.
Reason(R): There is the fusion of male and female gametes.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Sexual Reproduction |
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Assertion(A): Formation of vegetative propagules in plants does not involve two parents.
Reason(R): Vegetative propagation is a type of asexual reproduction.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Asexual Reproduction |
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Assertion(A): Water hyacinth can propagate vegetatively at a phenomenal rate.
Reason(R): It is very difficult to get rid off water hyacinth once introduced into the water body.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Asexual Reproduction |
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Assertion(A): Dioecious organisms must have a special mechanism for gamete transfer.
Reason(R): Male and female gametes are produced in different individuals.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Events during Sexual reproduction |
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