Ans. The placenta is an organ that develops during pregnancy and plays a crucial role in supporting the growth and development of the fetus. It is formed from both maternal and fetal tissues.The placenta acts as a barrier between the mother and the fetus, allowing for the exchange of nutrients, oxygen, and waste products between the two. It also produces hormones, such as human chorionic gonadotropin (hCG), which helps maintain pregnancy. The placenta also filters harmful substances, such as drugs and toxins, preventing them from reaching the developing fetus.