Geitonogamy involves
fertilisation of a flower by the pollen from another flower of the same plant
fertilisation of a flower by the pollen from the same flower
fertilisation of a flower by the pollen from a flower of another plant in the same population
fertilisation of a flower by the pollen from a flower of another plant belonging to a distant population
Geitonogamy is a type of self-pollination, In this the transfer of pollen grains from the anther to the stigma of another flower of the same plant.