Question

In flowering plants, meiosis takes place during

• A. Pollen grain formation
• B. Seed germination
• C. Seed formation
• D. Gamete formation

Answer 1

The correct option is A Pollen grain formation

Microsporogenesis
Microsporogenesis is the development of microspores from the microspore mother cells. The microspore mother cell undergoes meiosis to produce the microspore tetrad. As the anther matures and dehydrates, the microspores dissociate from each other and develop into pollen grains (male gametophyte). Hence meiosis occurs in the formation of pollen grains.


Seed germination
Seed germination is the process by which the plant embryo resumes growth after the quiescent stage. It takes place by mitosis.

Gamete formation
The generative cell of pollen grain undergoes mitotic division to form two male gametes in plants. In the same way the nucleus of the functional megaspore undergoes three successive mitotic divisions to form the egg apparatus and other nuclei in the embryo sac.

Seed formation
After fertilisation, the ovule undergoes changes to produce the seed. The creation of embryo and seed coats occurs with the help of mitotic divisions.

Final answer
a. Pollen grain formation.