DPP 5 Topic: Fertilization & (Cleavage Part 1) No. of Questions 126 What helps in the penetration of egg by the sperm (a) Fertilizin (b) Antifertilizin (c) Sperm lysin (d) Fertilization membrane After a sperm has penetrated an ovum in the process of fertilization, entry of further sperms is prevented by (a) […]