LIFE SCIENCE

Detailed explanation-1: -During pregnancy, placentation is the formation and growth of the placenta inside the uterus. It occurs after the implantation of the embryo into the uterine wall and involves the remodeling of blood vessels in order to supply the needed amount of blood. In humans, placentation takes place 7–8 days after fertilization.

Detailed explanation-2: -The placenta is an organ that develops in the uterus during pregnancy. This structure provides oxygen and nutrients to a growing baby. It also removes waste products from the baby’s blood. The placenta attaches to the wall of the uterus, and the baby’s umbilical cord arises from it.

Detailed explanation-3: -It is defined as the arrangement and attachment of ovules within the plant’s ovary. The ovules get attached via funicle, and the part of the ovary where ovules are attached is the placenta.