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Which one of the following statements is...

Which one of the following statements is not true about pollen grains?

A

They form well preserved fossil due to the presence of sporopollenin

B

Can be cryopreserved at-`196^@C` in liquid nitrogen

C

Their allergy may cause pneumonia

D

These shed at two or three-celled stage

Text Solution

Verified by Experts

The correct Answer is:
C
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  2. Match the following columns.

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  10. Which of the following situations correctly describe the similarit...

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  11. A few statement describing certain features of reproduction are giv...

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  14. Match of the following columns.

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  16. Cross-pollination results in

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  18. Transfer of pollen from anther to stigma of another flower of same pla...

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