Assertion(A): Seasonal breeders are reproductively active throughout their reproductive phase.
Reason(R): Seasonal breeders do wait for favorable seasons for 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:  Sexual Reproduction |
 61%
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Assertion(A): Pollen grains have to be transferred to stigma after fertilization.
Reason(R): Pollen grains are the carriers of male gametes.
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:  Events during Sexual reproduction |
 72%
From NCERT
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In angiosperms, after fertilization:
I: The zygote develops into the embryo.
II. The ovules develop into the seed.
III. The ovary develops into the fruit.
IV. A thick protective fruit wall called pericarp develops.
1. Only I, II and IV are correct
2. Only II, III and IV are correct
3. Only I, II and III are correct
4. I, II, III and IV are correct
 
Subtopic:  Events during Sexual reproduction |
 87%
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The genus, Ophioglossum, has the largest number of chromosomes in the known plant kingdom. The number of chromosomes in its meiocyte is:
1. 48
2. 96
3. 630
4. 1260
Subtopic:  Sexual Reproduction |
 75%
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The vegetative propagule in the angiosperm Agave is known as:
1. Bulbil
2. Runner
3. Rhizome
4. Bulb
Subtopic:  Asexual Reproduction |
 92%
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Strobilanthes kunthiana [neelakurinji] flowers once in every:
1. 2 years
2. 12 years
3. 20 to 25 years
4. 50 to 100 years

Subtopic:  Sexual Reproduction |
 94%
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Identify the correct statements amongst the following:

A: All sexually reproducing organisms are diploid.
B: The major difference between different cells in the same organism is that they have different DNA.


1. Only A
2. Only B
3. Both A and B
4. Neither A nor B

Subtopic:  Events during Sexual reproduction |
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Clear cut vegetative, reproductive and senescent phases are seen in:
I: Annual plants
II: Biennial plants
III: Perennial plants
1. Only I
2. Only III
3. Only I and II
4. I, II and III
Subtopic:  Sexual Reproduction |
 74%
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Vegetative propagule in water hyacinth is:
1. Rhizome    
2. Bulbil
3. Offset    
4. Eye
Subtopic:  Asexual Reproduction |
 92%
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Given below are two statements: 
Assertion (A): In protists and monerans, the organism or the parent cell divides into two to give rise to new individuals.
Reason (R): In single celled organisms, cell division is itself a mode of 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. Both (A) and (R) are false.

 
Subtopic:  Asexual Reproduction |
 74%
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