Which one of the following statements is incorrect about menstrual cycle ?

Options

A. The first menstruation begins at puberty and is called menarche
B. Lack of menstruation may also occur due to some environmental factors like stress, poor health
C. Corpus luteum secretes large amounts of progesterone which is essential for maintenance of endometrium
D. In absence of fertilisation, corpus luteum degenerates in luteal phase and new follicles start developing immediately

Answer

D

Explanation

In absence of fertilization, corpus luteum degenerates in luteal phase but new follicles do not start develop immediately after its degeneration. During follicular phase, the primary follicles in the ovary grow to become fully mature Graafian follicle.