Question

which is the outer hard and shiny coat for a pollen?​

Answer 1

Sporopollenin is major component of the tough outer walls called as exine of plant spores and pollen grains.

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Answer 2

Answer:

Sporopollenin is major component of the tough outer walls called as exine of plant spores and pollen grains. It is chemically very stable and is usually well preserved in soils and sediments.