Question

How do the sperm penetrate the egg through the defence barrier of the egg?

• A. They have a sharp pointed head
• B. The barrier is not that strong
• C. The sperms release digestive enzymes
• D. None of these

Answer 1

The correct option is C

The sperms release 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.