Question

 What is placenta? What is its function?

Answer 1

Placenta is a disc-like tissue that develops between the uterus wall and the embryo. It helps the embryo in meeting its requirements from the mother.

Answer 2

Placenta is a special disc-like organ that develops in the fourth week of pregnancy. It establishes an intimate connection between the foetal membrane and the uterine wall via umbilical cord.

Function of Placenta:

The exchange of materials between the blood of mother and foetus takes place through placenta. It provides nutrition to the foetus. It also serves as the respiratory (by allowing exchange of oxygen and carbon dioxide) and excretory organs (by allowing excretion of waste material of foetus into mother's blood) of the foetus.