Fill up the blanks in the following paragraph by selecting the correct option.
During copulation (coitus) semen is released by the penis into the vagina and is called (i)._____.the ovum released by the ovary is transported to the (ii)._____where (iii).______takes place during fertilisation, a sperm comes in contact with the zona pellucida layer of the ovum and induces changes in the membrane that block the entry of (iv)._____The secretions of the (v)._____help the sperm enter into the cytoplasm of the ovum.

Options

A. Jelly coat
B. Zona pellucida
C. Vitelline membrane
D. corona radiata

Answer

B