Question

Describe the functions of vegetative and generative cells of a mature pollen grain with a suitable diagram.

Hint:

Vegetative cell = Forms pollen tube.
Generative cell = Divides into two sperm cells for fertilization.

Answer 1

A mature pollen grain consists of two cells:

• Vegetative cell: It is larger and provides nourishment and assists in pollen tube formation.
• Generative cell: It divides to form two male gametes, which participate in fertilization.

The vegetative cell forms the pollen tube that transports the male gametes to the ovule, whereas the generative cell undergoes mitotic division to produce two sperm cells essential for double fertilization.