Question

After a sperm has penetrated in ovum during fertilisation, the entry of further sperms is prevented by

• A. Development of the pigment coat
• B. Development of the vitelline membrane
• C. Condensation of yolk
• D. Formation of fertilisation membrane

Answer 1

The correct option is D Formation of fertilisation membrane

Fertilization membrane is a resistant membranous layer in eggs of many animals that forms following fertilization by the thickening and separation of the vitelline membrane from the cell surface and that prevents multiple fertilization.

Therefore, the correct answer is option D.