Question

Describe the structure of a pollen grain

Answer 1

Hey mate here is your answer..

A pollen grain is slightly yellowish in colour. They contains cytoplasm in them.

They are microscopic that is not visible to a naked eye.

They are microgametophytes that produce male gametes.

Hope it helps★

Answer 2

STRUCTURE OF POLLEN GRAIN

• The group of four pollen grain is called tetrad.

• Latter the mature pollen grain separate from the tetrad.

• A mature pollen grain has a two layered wall.

• The outer called exine is thick and spinous outgrowth and is made up of a complex substance called sporopollenin.

• It is resistant to decay and hence the pollen grains are seen well preserved in fossils.

• At certain places the exine is absent or very thin giving an appearance of a pore called germ pores.

• There are three germ pores in dicots and one germ pore in monocots.

• The inner is thin and smooth and is called intine.

• Intine is made up of cellulose.