Acrosomal reaction of the sperm occurs due to:

Biology Human Reproduction NCERT Examplar Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

Its contact with zona pellucida of the ova

Reactions within the uterine environment of the female

Reactions within the epididymal environment of the male

Androgens produced in the uterus

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When head of sperm binds to zona pellucida of ovum the acrosome release its contents by exocytosis. The content inside acrosome includes various hydrolytic enzymes like hyaluronidase, corona penetrating enzymes, etc. This is called acrosomal reaction. It helps the sperm to reach the plasma membrane of ovum, by dissolving corona radiata and zona pellucida.

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