Question

A glycoprotein fertilisin is secreted by ovum and the penetrating sperm also has a protein its surface called antifertilisin.

Answer 1

Explanation:

discovery by Lillie …and protein, which he termed fertilizin. Its specific interaction with a substance surrounding sperm cells, called antifertilizin, causes the sperm to adhere to and penetrate the egg. The process is thought to ensure fertilization of the ovum only by sperm of its own species.