Which one of the following may require pollinators but is generatically similar to autogamy

Options

A. Xenogamy
B. Apogamy
C. Cleistogamy
D. Geitonogamy

Answer

D

Explanation

Xenogamy - Cross pollination between two flowers of genetically different flowers.
Appgamu - Formation of sporophytefrom gametophyte without involving the formation and fusion of gametes.
Cleistogamy - the flowers are intersexual and remain closed causing self-pollination, they do not need pollinators.
Geitonogamy - the pollen grains of one flower are transferred to stigma to another flower belonging to either same plant or genetically similar plant. This is similar genetically to autogamy which is self pollination.