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What does an interaction between pollen ...

What does an interaction between pollen grains and its compatible stigma result in after pollination ? List two steps in sequence that follow after the process.

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See Q.29, (b) Set-III., Delhi Board-2013.
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Assertion (A): Germ pores are the regions where intine comes out to form a pollen tube after pollination. Reason (B): Germ pores are prominent apertures of pollen grains where exine is thin or absent.