The transfer of pollen from the anther of one flower to the stigma of another flower on a different plant of the same species is called
Cross-pollination
Self-pollination occurs when pollen from the anther of a flower is deposited on the stigma of the same flower, or another flower on the same plant. Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different plant of the same species.