Read the passage and answer the following question:

In flowering plants, the production of male and female gametes occurs within the pollen grain and embryo sac, respectively. Since both types of gametes are immobile, they require a mechanism to be brought together for fertilization to take place. Pollination is the process that serves this purpose. Pollination refers to the transfer of pollen grains, which are released from the anther to the stigma of a pistil. Flowering plants have developed various remarkable adaptations to accomplish pollination. They rely on external agents to facilitate the process of pollination.

Transfer of pollen grains from anther to the stigma of another flower of the same plant is which type of pollination?

Geitonogamy

The transfer of pollen grains from the anther to the stigma of another flower of the same plant is called geitonogamy. This happens when the flowers are close together, or when they are pollinated by insects or other animals that visit both flowers.It is a type of self-pollination, but it is not the same as autogamy.

In autogamy, the pollen grains are transferred from the anther of a flower to the stigma of the same flower. This happens when the flower's anthers and stigma are close together, or when the flower self-pollinates.

Xenogamy is the transfer of pollen grains from the anther of one flower to the stigma of another flower on a different plant. This is the most common type of pollination, and it is necessary for genetic diversity.

Cross pollination is a general term for pollination that occurs between two different flowers. It can be either xenogamy or geitonogamy.