Question

1 Name the process by which most of the oogonia degenerate before the birth * O Atresia O Zona pellucid O Acrosome O Granu.ose cells​

Answer 1

Explanation:

During the development of foetus, many oogonia are produced which undergo mitosis and form primary oocytes. These primary oocytes remain arrested at prophase I of meiosis I throughout the childhood. It is estimated that about 2 million primary oocytes are present in a female at the time of birth. No primary oocyte is added after birth.

Hence, oogonia are constant in number as they are formed at the embryonic stages of the foetus and no oogonia are formed after birth.

So, the correct answer is 'Constant in number and never be added after birth'.