AP BIOLOGY

Detailed explanation-1: -Pollination occurs in the same flower of a plant is called Autogamy. It is also a type of self-pollination. Xenogamy and Allogamy are the same things and type of cross-pollination in which pollen grains from the flower of one plant transfer to the stigma of the flower of another plant.

Detailed explanation-2: -Pollination can occur between two different plants, which is referred to as cross-‐ pollination, or it can occur within the same plant or even the same flower, which is called self-‐ pollination. There are two types of pollination: abiotic and biotic.

Detailed explanation-3: -Final Answer: The correct statement about pollination is “Cleistogamous flowers are always autogamous”.

Detailed explanation-4: -The transfer of pollen from stamens to stigma of the same flower or between two flowers of the same plant is called self pollination. The type of pollination taking place within two flowers of different plants is called cross pollination. The type of pollination also depends on the different pollinators.

Detailed explanation-5: -The transfer of pollen grains from anther to stigma of different flower of different plant of the same species is called cross pollination. Fertilisation takes place only if pollination takes place between plants of the same species.