NEET BIOLOGY

Detailed explanation-1: -In angiosperms, pollen is produced by the anthers of the stamens in flowers. In gymnosperms, it is formed in the microsporophylls of the microstrobili (male pollen cones). Pollen consists of one or more vegetative cells and a reproductive cell.

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: -Through the process of meiosis, pollen is formed in the pollen sacs (microsporangia) inside the anthers of a flower.

Detailed explanation-4: -The anther is located on top of the stamen, the male reproductive part. The anther is a key part of the reproductive process of a flower. This is because it produces and houses pollen grains. Pollen grains are the male sex cells for the flower.

Detailed explanation-5: -Pollen is dispersed by rapid uncurling of the filament and anther opening. The filament and anther lack cells with lignified wall thickenings, which are usually responsible for anther opening and ballistic pollen dispersal. Instead, dispersal is the result of the sudden movement of the filament.