Question

All are events of pollen-pistil interaction EXCEPT ______

Options

• absorption of water and nutrients from the stigmatic surface.

• first division of pollen grain.

• deposition of pollen grain on stigma.

• germination- of pollen grains to produce pollen tube.

Answer 1

All are events of pollen-pistil interaction EXCEPT first division of pollen grain.

Explanation:

Most angiosperms discharge pollen grains from their two-celled anthers. The first division of pollen grains is not caused by pollen-pistil contact.