Which of the following statements are correct regarding female reproductive cycle?

A. In non-primate mammals cyclical changes during reproduction are called oestrus cycle.

B. First menstrual cycle begins at puberty and is called menopause.

C. Lack of menstruation may be indicative of pregnancy.

D. Cyclic menstruation extends between menarche and menopause.

Choose the most appropriate answer from the options given below.

The graph given below shows the level of the ovarian hormones in a normally menstruating woman during the follicular phase. Name ‘A’ and ‘B’.

Reconstruct the graph showing the level of hormones in luteal phase.

Define the following:

Amenorrhea

The graph given below shows the level of the ovarian hormones in a normally menstruating woman during the follicular phase. Name ‘A’ and ‘B’.

Arrange the phases of the menstrual cycle in the correct order.

$1)$ Proliferative
$2)$ Menstrual
$3)$ Ovulatory
$4)$ Secretory