(a) Parturition (childbirth) involves a very hard muscular work at the expense of considerable energy by the mother. It is, therefore, also called labour.
(b) Early secretions from the mammary glands of mother are termed as colostrum. It brings antibodies from mother to combat infections in the newly born baby who till has to build up its own antibodies.
(c) In males, testes are lodged in the scrotum and lie outside the abdominal cavity because the temperature in the scrotum is about 2⁰C lower than that in the abdominal cavity. It is ideal for the development and survival of spermatozoa.

Menarche represents the beginning of menstrual cycle which is an indication of attainment of sexual maturity.It usually occurs at the age of 12-15 years.Menopause, on the other hand, refers to the cessation of menstruation, which in turn means stoppage of gamete production i.e., it marks the end of reproductive fertile life of the female.It occurs between 45 to 55 years.Menopause, on the other hand, refers to the cessation of menstruation, which in turn means stoppage of gamete production i.e., it marks the end of reproductive fertile life of the female.It occurs between 45 to 55 years of age. 

Haemo-endothelial placenta.

LH surge is essential for the events leading of ovulation.

(i) Two
(ii) One