AP BIOLOGY

Detailed explanation-1: -False. Self-pollination can occur in bisexual flowers, i.e. in flowers having both male and female organs, or it can occur in unisexual flowers where both male and female flowers are borne on the same plant. Q.

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: -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-4: -Pollination is simply the transfer of pollen grains from an anther to a stigma. Fertilization occurs much later when the pollen grains germinate on the stigma and send down a pollen tube which releases the sex cells to fertilize the ovules.

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.