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In angiosperms, all the four microspores...

In angiosperms, all the four microspores of a tetrad are covered by a layer formed by

A

pectocellulose

B

callose

C

cellulose

D

sporopollenin

Text Solution

Verified by Experts

The correct Answer is:
B
The deposition of callose starts in pollen mother cell as it enters meiosis and is complete by the end of first meiotic division. By the time tetrad are formed, the common callose wall dissolves, even then all the four microspores lie within a common callose wall.
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