Question

Transfer of pollen to the stigma of another flower of the same plant:
A.Autogamy
B.Allogamy
C.Xenogamy
D.Geitonogamy

Answer 1

Pollination is of two types i.e. Self-pollination and cross-pollination. The idea of self-pollination and cross-pollination is derived from the transfer of pollens on the same plant or different plant. Pollination is one of the types of plant reproduction. It helps in the growing new progeny of plants.

Complete answer:
Let us talk about male gametes called Pollen. Pollen grains are powder-like substances and it is found on another (male gametophyte that produces male gametes). It is the process of reproduction in plants. Pollination is the process of transferring pollen grains from anther to the stigma of the female. Pollen grain gets traveled from anther via a tube to the stigma of the flower. The female reproductive organ is called the pistil and on top of the pistil is a stigma that catches the pollen grains. We will note that Pollination is done with the help of many agents like birds, bats, insects, water, and wind.

It is important to talk about the steps of different styles of pollination.
Different types of pollination are performed by different agents.
Pollination by wind and insects is most common in nature.
Self-pollination as the name suggests self means within, in this type the pollens are transferred from anther to stigma or the same flower of a different flower of the same plant.
Geitonogamy is a type of self-pollination, in which the transfer of pollen from anther to the stigma of another flower of a similar plant takes place.
In cross-pollination, anther of one flower gets transferred to the stigma of another flower of a different flower.
Both the types of pollination have both advantages and disadvantages.
In self-pollination, the purity of gametes is maintained while in cross-pollination we can easily make hybrid plants of our desired qualities.

Hence, the correct answer is option (D)

Note: Geitonogamy is one of the types of pollination that comes under self-pollination among plants, in these types of pollination the transfer of pollen from the anther to the stigma of another flower of a similar plant takes place. Pollination is done with help of many agents like birds, bats, insects, water, and wind.