How is a baby born? Explain the process of fertilization with the reproductive organs of a male and a female.

The male and female reproductive organs of human beings become functional only after attaining sexual maturity. Then various changes take place in human body. During puberty sexual hormones and gametes begin to be produced.

The male gamete- sperm- is introduced inside the female vagina by copulation.

Sperms are active and mobile and reach ovary and then pass into fallopian tube to fertilize the ovum.

Fertilization occurs in the fallopian tube if copulation takes place during ovulatory period.

Embryo’s development starts immediately and menstruation stops.

Embryo moves down to the uterus and implantation occurs.

The time period of foetus development till birth is called gestation. Foetal development inside the mother’s body takes approximately 9 months.

By the end of gestation the act of giving birth is called as parturition.