AP BIOLOGY

Detailed explanation-1: -The anther is the part of the stamen that contains pollen. Pollen contains the male gametes. Pollen must be moved to a part of the pistil called the stigma for reproduction to take place.

Detailed explanation-2: -The male part of flowering plants is the stamen. This consists of an anther supported by a single stalk, the filament. The anther usually contains four pollen sacs which are responsible for producing pollen grains.

Detailed explanation-3: -Petals. The colorful, thin structures that surround the sexual parts of the flower. Not only attract pollinators, but also protect the pistil and stamen.

Detailed explanation-4: -Pollination is the transfer of pollen grains from an anther to a stigma. Pollen can be transferred by an animal or by the wind. Fertilisation takes place inside the ovary when the nucleus of pollen grain fuses with the nucleus of an ovule to produce a zygote.

Detailed explanation-5: -In flowering plants, however, the ovules are contained within a hollow organ called the pistil, and the pollen is deposited on the pistil’s receptive surface, the stigma.