Geitonogamy – Transfer of pollen grains from the anther to the stigma of another flower of the same plant. Although geitonogamy is functionally cross-pollination involving a pollinating agent, genetically it is similar to autogamy since the pollen grains come from the same plant.

 At its lower end, the embryonal axis has the  radical and root cap enclosed in an undifferentiated sheath called coleorrhiza.