Autogamy refers to
transfer of pollen grain to stigma of another flower of the same plant
transfer of pollen grain to stigma of same flower
transfer of pollen grains from anther to stigma of another flower of another plant of same species.
transfer of pollen grains from anther to stigma of another flower belonging to another species.
In autogamy, pollination is achieved within the same flower. Transfer of pollen grains from the anther to the stigma of the same flower.