Q.

In Cycas male gametophyte is liberated at

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a

3 – celled

b

4 – celled

c

2 – celled

d

8 – celled 

answer is A.

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Detailed Solution

The microspore is the first cell of the male gametophyte. It divides to form a prothallial cell and an antheridial cell. The antheridial cell further divides to form a generative cell and a tube cell. The microspore is released from the microsporangium at this 3 celled stage.

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