Question
Distinguish between:
Corona radiata and Zona pellucida

Answer

S. No.
Corona radiata
Zona pellucida
(i)
It consists of follicle cells.
It is a single membrane.
(ii)
It envelops the egg outside the zona pellucida.
It is above the vitelline membrane making the membrane thick.
(iii)
The cells provide nourishment to the egg at the time of release from the ovary.
It protects the egg.

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