POLLEN grains from the anther to the STIGMA of a flower is called pollination.Pollens are produced by the male PART of a flower called the stamen.Pistil is the female part of a flower with stigma at its top.Geitonogamy is the process of pollination between two flowers of the same plant.The transfer of pollen grains from the anther to the stigma of another flower of the same plant is called geitonogamy.Honeybee helps with the pollination of sunflowers.Bats help with the pollination in banana. Autogamy is the fusion of two gametes that come from a single individual.Xenogamy is the transfer of pollen grains from the anther to the stigma of a DIFFERENT plant, OPPOSITE the process of Geitonogamy.