Question

In what percentage of angiosperm pollen grains are shed at onli 3- celled stage

Answer 1

about 40% angiosperm pollen grains are she'd at 3 celled stage.

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Answer 2

In over 60 per cent of angiosperms, pollen grains of a microsporeare shed at this 2-celled stage. In the remaining species, the pollen grain generative cell divides mitotically to give rise to the two male gametes before pollen grains are shed (3-celled stage).

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