alleryThe new membrane that forms around the secondary oocyte just before ovulation is called the:
AZona pellucida
BTheca interna
CVitelline membrane
DCorona radiata
Answer & Solution
Correct answer: A. Zona pellucida
The **zona pellucida** is the glycoprotein membrane that surrounds the secondary oocyte.
Sperm must penetrate it to fertilise the ovum, and after entry of one sperm it blocks further sperms.
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