Question

Given below are few statements with respect to the process of oogenesis in a human ovary:
(i) Each granulosa cell gets surrounded by a primary oocyte to form the primary follicle.
(ii) A couple of million of oogonia are formed within each fetal ovary during the embryonic development.
(iii) Tertiary follicle is characterised by antrum and theca layers.
(iv) Secondary follicles form a zona pellucida layer around it.
(v) Mature graafian follicle ruptures to release the secondary oocyte from the ovary.
Choose the option with all true statements from the given options:

• A. (i), (iii), (iv)
• B. (ii), (iii), (iv), (v)
• C. (ii), (iv), (v)
• D. (i), (iii), (v)

Hint:

Oogenesis involves the formation of follicles, with the tertiary follicle having an antrum and the Graafian follicle releasing the secondary oocyte during ovulation.

Answer 1

The Correct Option is B

In oogenesis, (i) is incorrect because granulosa cells surround the primary oocyte, not the other way around, to form the primary follicle. 
(ii) is correct, as around 1–2 million oogonia are formed in each fetal ovary during development. 
(iii) is correct, as the tertiary follicle has an antrum and theca layers. 
(iv) is correct, as the zona pellucida forms in the secondary follicle stage. 
(v) is correct, as the Graafian follicle ruptures to release the secondary oocyte during ovulation.