Question

what is cross and self pollination​

Answer 1

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Cross pollination - the transfer of pollen grains from the anther to the stigma of different flower is called cross pollination

Self pollination - The transfer of pollen grains from the anther to the stigma of the same flower is called self pollination

Answer 2

Explanation:

Self pollination is the transfer of pollen from the anther to the stigma of the same flower or to the stigma of another flower of the same plant.

Cross pollination is the transfer of pollen from the anthers of flowers of one plant to the stigma of a flower of anther plant of the same species.