NEET BIOLOGY

Detailed explanation-1: -It mediates the metabolic exchanges of the developing individual through an intimate association of embryonic tissues and of certain uterine tissues, serving the functions of nutrition, respiration, and excretion. All of the fetal membranes function by adapting the developing fetus to the uterine environment.

Detailed explanation-2: -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: -The mammalian placenta is central to reproduction, being responsible for supporting fetal growth via transfer of nutrients and oxygen from the mother to the fetus, and for disposing of fetal waste products.

Detailed explanation-4: -It plays critical roles in facilitating nutrient, gas and waste exchange between the physically separate maternal and fetal circulations, and is an important endocrine organ, producing hormones that regulate both maternal and fetal physiology during pregnancy.

Detailed explanation-5: -All mammals except the egg-laying platypus and the five species of echidnas, the only surviving monotremes, rely on a placenta for their reproduction.