Assertion (A) : The foetus respires but does not breathe.

Reason (R): The maternal blood supplies oxygen to the foetus through placenta.

1. A is True and R is False
2. A is False and R is True
3. Both A and R are True
4. Both A and R are False

Mention the significance of the Testes being located inside the scrotum.

The onset of menstruation in a human female is called:

1. Menopause
2. Menarche
3. Ovulation
4. Oogenesis