question_answer

What happens during fertilisation in humans after many sperms reach close to the ovum?

A) Cells of corona radiata trap all the sperms except one

B) Only two sperms nearest the ovum penetrate zona pellucida

C) Secretions of acrosome helps one Sperm enter cytoplasm of ovum through zona pellucida

D) All sperms except the one nearest to the ovum lose their tails