Question

explain germination of pollen grains in stigma​

Answer 1

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Pollen germination starts with the pollen grain landing on stigma. The cell of the pollen grain divides into two cells- one of these is smaller in size and called generative cell and bigger one is called tube cell. The intine grows out through the germ pore and form pollen tube.

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Answer 2

Answer:

Pollen germination starts with the pollen grain landing on stigma. ... The intine grows out through the germ pore and form pollen tube. It grows into the tissue of the style towards the ovary. By this time the tube nucleus degenerates and the generative nucleus divides to form two male gametes.

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