Each creature produces same offspring to run their generation by establishing sexual relations. Their development gets completed completes because of the growth of cells. Thus, producing creature of same race is called reproduction. There is no reproduction in non living things. Arrangement of reproduction is different in different creatures. There is asexual reproduction in single cells creatures as amoeba whereas there is sexual reproduction in multi cells
creatures as human being. Here it means to say that new creature is produced by sexual intercourse and hereditary qualities transmit in them. Sexual organs in men man and woman are different in formation and function and both have special reproductive cells-spermatozoa in man and ovum in woman- which are called gamete. A joint cell comes into existence when sperms meet with ovum after sexual intercourse and it is called zygote which develops in the womb of woman and assumes the form of a new child.
Producing sperm and inserting them into the vagina of woman is the main function of man’s reproductive system. The function of woman’s reproductive system is some complicated comparison to man. Besides producing ova, it nurtures and defends to the developing child after fertilization and there milk is produced by the woman reproductive system after giving birth to a child.