Question

what is pollen grains?

Answer 1

Answer:

Pollen grains are the male reproductive cells (gametes) of angiosperms.

Explanation:

They are produce in anther and have dual membranes- exine and intine.

The vegetative nucleus shows it the way to reach the egg cell and also provides nutrition.

The germinative nucleus divides into two male gametes for double fertilization.

Refer to the attachment for the diagram.

Answer 2

pollen grains is a part of male flower which carry vegetative cell and a generative cell

pollen grains help to transfer these male gamete to female flowers

pollen have different structure varies according to species of plant