. Name the parts of the human female reproductive system where
(i) fertilisation takes place
(ii) implantation of the fertilised egg occurs.
Explain how the embryo gets nourishment inside the mother's body.
Ans. (i) Fertilisation takes place in fallopian tube (oviduct).
(ii) Implantation of the fertilised egg occurs in the uterus.
Nourishment of embryo. After fertilisation, zygote is formed which develops into an embryo. The embryo gets nutrition from the mother's blood with the help of a special tissue called placenta. This is a disc which is embedded in the uterine wall. It contains villi on the embryo's side of the tissue. On the mother's side are blood spaces, which surround the villi. This provides a large surface area for glucose and oxygen to pass from the mother to the embryo. In this way, embryo gets its nutrition