(i) How many eggs are produced every month by either of the ovaries in a human female? Where does fertilization takes place in the female reproductive system?
(ii) What happens in case the eggs released by the ovary is not fertilized?

Explanation

(i) One egg is produced every month by one of the ovaries.
Fertilization takes place in the fallopian tubes.
(ii) In case the egg released by the ovaries is not fertilized, it lives for about one day. But since the uterus prepares itself every month to receive a fertilized egg, its lining become thick and spongy. When the egg does not fertilize this lining slowly breaks and come out through the vagina as blood and mucus and is known as menstruation.