Question

Explain the development of male gametophyte in an angiosperm.

Answer 1

The angiosperm male gametophyte develops inside the pollen grain. This process involves:

1. Microspore Formation: A microspore divides mitotically into a smaller generative cell and a larger vegetative cell.
2. Mature Pollen Grain: The generative cell then undergoes mitosis to produce two male gametes. This results in a three-celled pollen grain, composed of two male gametes and one vegetative cell.