At which phase of the menstrual cycle does the Graafian follicle transform into the corpus luteum?

If in a normal menstruating woman,menses occur on $5^{\text{th}}$ April,what will be the expected date of ovulation?

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

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

$A$ human female experiences two major changes,menarche and menopause,during her life. Mention the significance of both the events.

Select the correct statement.