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  • The membranous cover of the ovum at ovulation is: a. Corona Radiata b. Zona radiata c. Zona pellucida d. Chorion

The membranous cover of the ovum at ovulation is:

a. Corona Radiata
b. Zona radiata
c. Zona pellucida
d. Chorion

Answers (1)

Ans: The answer is the option (a) corona radiata

Explanation: The ovum is surrounded by two protective layers: the inner thin, transparent, non-cellular coat known as the zona pellucida, and the outer thick coat called the corona radiata. The corona radiata is formed by follicle cells that adhere to the oocyte before it leaves the ovarian follicle. During fertilization, the sperm first encounters the corona radiata and then the zona pellucida in order to reach the plasma membrane of the egg (ovum).

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