Which of the following combinations of sex chromosomes products a male child (or boy)?

XX or XY

State one situation (other than menopause) when ovulation and menstruation stop in a woman.

Which of the two has a shorter reproductive phase of life: men or women?

Which of the two, sperm or egg cell (ovum), decides the sex of the child?

What is the legal age for the marriage of (a) boys, and (b) girls, in our country?