Question

Which one of the following is the incorrect matching of the events occurring during the menstrual cycle?

• A. The tertiary follicle further changes into the mature follicle or Graafian follicle.
• B. Development of corpus luteum in the proliferative phase with increased secretion of progesterone.
• C. The secondary oocyte forms a new membrane called zona pellucida.
• D. The Graafian follicle ruptures to release the secondary oocyte (ovum) from the ovary by the process called ovulation.

Answer 1

Answer: (B)

The corpus luteum is essential for establishing and maintaining pregnancy in females. In the ovary, the corpus luteum secretes estrogen and progesterone, which are steroid hormones responsible for the thickening of the endometrium and its development and maintenance, respectively.