Question

From which place pollen tube comes out of pollen grains

Answer 1

Answer:

Pistil

The pollen tube acts as a conduit to transport the male gamete cells from the pollen grain—either from the stigma (in flowering plants) to the ovules at the base of the pistil or directly through ovule tissue in some gymnosperms.

Answer 2

Answer:

Pollen grains come out from stamen or anther ... and transfer to stigma which secreate harmone that helps in development of pollen tube ...

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