(a) Difference between spermatogenesis and oogenesis —
| Spermatogenesis | Oogenesis |
|---|---|
| It is the process of production of sperms in seminiferous tubules of testes. | Oogenesis is the process in which the ova - producing cells give rise to the mature ovum. |
(b) Difference between implantation and gestation —
| Implantation | Gestation |
|---|---|
| The process of fixing of the blastocyst to the wall of the uterus/endometrium is termed implantation. | The full term of the development of the embryo in the uterus is called gestation. |
(c) Difference between pregnancy and parturition —
| Pregnancy | Parturition |
|---|---|
| It is the state of carrying a developing embryo or a foetus within the female body. | It is the act of expelling the full term foetus from the mother's uterus at the end of gestation. |
(d) Difference between placenta and umbilical cord —
| Placenta | Umbilical cord |
|---|---|
| Placenta is the intimate connection established between the foetal membranes and uterine wall permitting diffusion of nourishment from the mother's blood to that of the growing foetus and disposal of wastes from the blood of the foetus to that of the mother. | It is a cord containing blood vessels which connects the placenta with the foetus. |
(e) Difference between identical and fraternal twins —
| Identical twins | Fraternal twins |
|---|---|
| Identical twins are produced by a single fertilised egg getting split into two parts during its early stages of cell division. | Fraternal twins are produced by two different eggs which are released from the ovaries at a time and both got fertilised together. |
| Identical twins are either both boys or both girls. | Fraternal twins may be either both boys or both girls or one boy and one girl. |
(f) Difference between Menarche and Menopause —
| Menarche | Menopause |
|---|---|
| It is the onset of menstruation in a young female at about the age of 13 years. | It is the permanent stoppage of menstruation in females at about the age of 45 years. |