Start learning →

The 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.
Practise this question with Quill — AP Intermediate 2nd Year →

Keep practising Human Reproduction

Browse all Human Reproduction questions for AP Intermediate 2nd Year, or explore more Biology topics.

Start a Human Reproduction lesson →
Related questions
The average menstrual cycle in human females lasts approximately:In human females, the first menstruation at puberty is termed:At puberty, approximately how many primary follicles remain in each ovary?For normal male fertility, at least what percentage of ejaculated sperms must show vigorou