Question

In an angiosperm, a functional megaspore develops into an

• A. Embryo sac
• B. Endosperm
• C. Ovule
• D. Embryo

Answer 1

The correct option is A

Embryo sac

The correct option is A.

Explanation for correct option:

1. The megasporangium's megaspore mother cell divides meiotically to produce four megaspores.
2. In which, there is only one functional megaspore that develops into the embryo sac.
3. The other three degenrates.
4. This embryo sac is the female gametophyte.
5. Two different processes that lead to the formation of an embryo are megasporogenesis and megagametogenesis.

Explanation for incorrect options:

Option B:

1. Angiosperms have triploid endosperm cells.
2. The endosperm is formed with the fusion of polar nuclei and one egg cell to produce the endosperm nucleus.

Option C:

1. The ovule is a fine structure in a seed plant.
2. It develops into a seed after fertilization.

Option D:

1. The zygote subsequently develops into an embryo, which grows slowly while the nucleus provides nourishment.

Final answer: In an angiosperm, a functional megaspore develops into an embryo sac.