Question

The given diagram shows a normal $28$-day menstrual cycle in a human female.

Select the correct statement regarding this

• A. Both (a) and (b)
• B. The hormone secreted in large amounts in phase III is also responsible for maintaining pregnancy in human females.
• C. Corpus luteum secretes progesterone in phase I however it degenerates completely in phase III.
• D. Primary follicle of ovary matures into Graafian follicle in phase II.

Answer 1

The correct option is D Primary follicle of ovary matures into Graafian follicle in phase II.

b) Primary follicle of ovary matures into Graafian follicle in phase II.

• In human female, the menstrual cycle lasts for about $28/29$ days. It is the follicular phase in which the primary follicles in the ovary grow to become a fully mature Graafian follicle (due to FSH stimulation).