Question

explane what happens when pollen grains reach to the stigma
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Answer 1

Answer:

When the pollen grain is deposited on the stigma it starts to germinate and the pollen tube grows up through the pistil of the female flower until it reaches the ovary and fertilisation occurs. after the pollen lands on suitable stigma, it has to reach the female germ cells which are in ovary.

Explanation:

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Answer 2

Answer:

fertilization

Explanation:

when the pollen grains germinate on stigma it creates pollen tube which travels towards the ovary..when the sperm cell from the pollen grain reaches ovary then that the sperm joins with the egg...which is called FERTILIZATION..the fertilized zygote will become a new plant inside the seed