Ovary:
(i) Production of female hormone (Oestrogen and progesterone).
(ii) Production of female gamete or egg.
Oviduct:
(i) Transfer of female gamete from the ovary.
(ii) Site of fertilisation.
Uterus:
(i) Implantation of zygote or embryo.
(ii) Nourishment of developing embryo.
The embryo inside the mother's body gets nourishment through the placenta.
Placenta is a special disc like tissue embedded in the mother's uterine wall and connected to the embryo. Placenta provides a large surface area for glucose and oxygen, and nutrients to pass from the mother's blood to the embryo.