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Question

Germ pores in the pollen grains are regions.

A
That can withstand high temperature, strong acids and alkalies
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B
Through which sperms are released into the female gametophyte
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C
Which are made of lignin and suberin
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D
Which lack sporopollenin
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Solution

The correct option is B Which lack sporopollenin
Germ pores are regions where outer wall exine is absent. Thus sporopollenin is also absent in these regions. They give rise to pollen tube. So answer will be D option.

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