In girl, the first menstruation begins at puberty and is called .....

What is called menstrual cycle ? Describe its phases ?

The following graph of relative concentrations of the four hormones present in the blood plasma of a woman during her menstrual cycle. Identify the hormones.

Corpus luteum is the source of secretion of

Ovulation can be detected by

The structure formed after release of ova from graafian follicles and secretory in nature, is