Question

How does a sperm penetrate an egg through the defence barrier of the egg?

• A. They have a sharp pointed head
• B. The barrier is not that strong
• C. The sperm releases digestive enzymes
• D. Mitochondria gives energy for penetration

Answer 1

The correct option is C

The sperm releases digestive enzymes

The head of the sperm contains hydrolytic enzymes which are released during the fertilization of the egg. The barrier is thus digested and the sperm penetrates into the egg.