Question

What is the ploidy of a functional megaspore?

• A. $2\mathrm{n}$
• B. $\mathrm{n}$
• C. $4\mathrm{n}$
• D. None of these

Answer 1

The correct option is B

$\mathrm{n}$

The correct option is B.

Explanation of correct option:

1. A megaspore develops inside of an ovule's nucellus.
2. Megasporogenesis occurs when the megaspore parent cell divides into four haploid megaspore cells.
3. One of the cells develops into an embryo sac, whereas the other three degenerate.
4. Thus, a functional megaspore has haploid ploidy $\left(\mathrm{n}\right)$.

Final answer: The ploidy of a functional megaspore is $\mathrm{n}$.