Question

What is the fate of secondary nucleus and integument after fertilisation?

Answer 1

In most of the Angiosperms, double fertilization occurs. In this process, the fusion of gametes occurs at 2 places inside the embryo sac.

So, after the fertilization takes place, different structures form different parts of the angiospermic plants.

Syngamy is followed by the egg which forms the zygote and the secondary nucleus undergoes triple fusion to form the endosperm nucleus.

The integument forms the seed coat and the secondary nucleus forms the endosperm.

Answer 2

Answer:

Secondary Nucleus forms Endosperm.

Integument forms seed cot (Outer Integument - Testa; Inner Integument is Tegmen).

Explanation:

Secondary nucleus is actually the polar nuclei present at the center of the embryo sac. They fuse with a sperm nucleus to form the food storing endosperm in albuminous seeds.