Question

Male gametes in angiosperms are formed by the division of

• A. Microspore
• B. Vegetative cell
• C. Generative cell
• D. Microspore mother cell

Answer 1

The correct option is C

Generative cell

The correct option is C

Explanation of the correct option:

1. The generative cell is formed during the microspore's first division and divides into two sperm cells in the pollen grain or pollen tube.
2. As a result, the generative cell is never "free" from the vegetative cell it is embedded in.
3. A generative cell in flowering plants is defined as a precursor that divides into two sperm cells in the developing male gametophyte,the pollen.
4. The generative cell is a haploid cell that divides by mitosis to produce two haploid sperm cells.

Explanation of the incorrect option:

Option A :

1. Microspores are little haploid spores that form male gametophytes, while megaspores form female gametophytes.
2. A gametophyte's microsporangium contains diploid microsporocytes that conduct meiosis to produce haploid microspores.
3. Either of the spores that give rise to male gametophytes in heterosporous plants is smaller than the megaspore.

Option B:

1. Vegetative cells are any bodily cells that do not participate in the creation of gametes.
2. These cells are created from cells that already exist as a result of asexual reproduction.
3. The vegetative cell in pollen grains is known to extend a pollen tube to carry the two sperm cells to the embryo sac for fertilization.

Option D:

1. Pollen mother cells (PMCs), also known as microspore mother cells, come from the anther's sporogenous tissue.
2. PMCs divide twice during meiosis to produce four haploid microspores.
3. The pollen grains are formed by continued mitotic division of the microspores.

Final answer: Male gametes in angiosperms are formed by the division of generative cells.