A pollinator is the biotic agent (vector) that moves pollen from the male anthers of a flower to the female stigma of a flower to accomplish fertilization or 'syngamy' of the female gametes in the ovule of the flower by the male gametes from the pollen grain. A pollinator is different from a pollenizer, which is a plant that is a source of pollen for the pollination process. Anthecology is the scientific study of pollination.