Question

Give the structure of a typical pollen grain and its pre-and post -pollination changes​

Answer 1

Answer:

The pollen grain is surrounded by two layers as exine which forms the outer layer and intine which forms the inner layer. The generative cell divides to form the two male gametes. The vegetative cell is responsible for the providing nutrition. The intine layer comes out of the germ pore to form the pollen tube.

Explanation:

Hope it helps you