Perisperm is:

The correct option is A

Persistent nucellus

The correct option is A:

Explanation of the correct answer:

1. Perisperm is the persistent nucellus in seeds.
2. It is also called residual nucellus.
3. Black pepper and beet have perisperm.

Explanation of the incorrect options:

Option B:

Perisperm is the remnant of the nucellus, not the endosperm.

Option C:

Perisperm is not the disintegrated part of the secondary nucleus.

Option D:

The peripheral part of the endosperm is known as the aleurone layer.

Final answer: Perisperm is the persistent nucellus.