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Question

The germ pores in the pollen grain are the regions


A

that can withstand high temperature and 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 up of lignin and suberin

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D

which lack sporopollenin

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Solution

The correct option is D

which lack sporopollenin


Germ pore is the small pore in the outer wall (exine) of the pollen grains. These are the regions which lack sporopollenin (a substance found in outer layer which is resistant to high temperature and strong acids and alkali). These germ pores help in the formation of the pollen tube and the releases male gametes during fertilisation.


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