Question

Point out the difference between autogamy and allogamy.

Answer 1

1. The transfer of pollen grain from the anther to the stigma of the same flower is known as autogamy.
2. The transfer of pollen grain from the anther of one flower to the stigma of the another flower on different plant of the same species is known as allogamy.
   

Autogamy	Allogamy
1. Autogamy refers to the transfer of genetically similar pollen grains.	1. Allogamy refers to the transfer of genetically different pollen grains.
2. Autogamy does not brings variation.	2.Allogamy brings variation.
3. Preserves the existing, beneficial genotypes of the plant over generations.	3. Participates in evolution by producing new genotypes.