Question

Explain how the pollen tube grows down through the style?

Answer 1

 If pollination is successful,
a pollen grain germinates and a pollen tube grows down thestyle toward the ovary

The pollen tubegoes through micropyle and discharges 2 sperm into the female gametophyte (embryo sac) within an ovule.

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Answer 2

Hello friend! I am glad to help you, here is the answer.

The pollen tube grows down through the style because of the chemical attraction of the ovary. This chemical attraction is known as chemotropism.

I hope this will help you. Thank you.