NEET BIOLOGY

Detailed explanation-1: -Mammary gland is the structure present in the mammalian females that helps it feed the young wants during early infanthood. After parturition, or delivery of the baby, the mammary glands secrete milk.

Detailed explanation-2: -Mammary Glands: Provide nourishment for the young during their postnatal period of rapid growth. Hair: bodies of mammals typically covered with hair, which has no structural homology in other vertebrates.

Detailed explanation-3: -Mammals are distinguished from other vertebrate animals by several unique features. All mammals produce and secrete milk from mammary glands to feed their offspring. They also have hair on their bodies, although some mammalian groups have less hair than others.

Detailed explanation-4: -Mammals are a group of vertebrate animals constituting the class Mammalia, and characterized by the presence of mammary glands which in females produce milk for feeding their young, a neocortex, fur or hair, and three middle ear bones.

Detailed explanation-5: -Metatheria (Marsupials) After birth, the young are transferred to a pouch where they reach maturity. Marsupials include kangaroo, wallaby, and koala. In marsupials, the mammary glands, which vary in number, are located within the pouch and terminate in a teat.