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Assertion: It is possible to store polle...

Assertion: It is possible to store pollen grains of a large number of species for years in liquid nitrogen `(-196^(@)C)`
Reason: Such stored pollen can be used as pollen banks, similar to seed banks, in crop breeding programmes.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
B
• It is possible to store pollen grains of a large number of species for years in liquid nitrogen `(-196^(@)C)`.
• Such stored pollen can be used as pollen banks, similar to seed banks, in crop breeding programmes.
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Read the following statements carefully and select the appropriate option given below. (i) It is possible to store pollen grains of a large number of species for years in liquid nitrogen (-196^(@)) . (ii) Cells of the nucellus have abundant reserve food materials. (iii) In a normal flower which opens and exposes the anthers and the stigma, complete autogamy is common. (iv) If both male and female flowers are present on the same plant, it prevents both autogamy and geitonogamy. (v) Cultivation of hybrids has tremendously increased productivity.

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