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

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

Options

(a) Secretions of acrosome helps one sperm enter ctoplasm of ovum through zona pellucida
(b) All sperms except the one nearest to the ovum lose their tails
(c) Cells of corona radiata trap all the sperms except one
(d) Only two sperms nearest the ovum penetrate zona pellucida

Correct Answer:

Secretions of acrosome helps one sperm enter ctoplasm of ovum through zona pellucida

Explanation:

During fertilisation in humans, many sperms reach close to the ovum. As sperm comes in contact with the zona pellucida layer of the ovum it induces changes in the membrane that blocks the entry of additional sperm. The secretion of acrosome helps one sperm enter cytoplasm of ovum through zona pellucida.

admin:

Related Questions

  1. Heart of cockroach is
  2. Which one of the following substance is at its lowest lowel in fish food?
  3. Which group of animals belong to the same phylum?
  4. Capacitation of sperms occurs in
  5. Nucellar polyembryony is reported in species of