EVERYDAY SCIENCE

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: -Mammals are characterized by the presence of milk-producing mammary glands for feeding their young, a neocortex region of the brain, fur or hair, and three middle ear bones.

Detailed explanation-3: -The lungs of mammals are unique because they have . The lungs of mammals are unique in having alveoli. These are tiny, sac-like structures. Each alveolus is surrounded by a network of very small blood vessels (see Figure below).

Detailed explanation-4: -Answer: All mammals have fur or hair, give birth to live young, have lungs and need air to breathe, are warm blooded, have four limbs if they live on land, and feed their babies milk from their breasts.

Detailed explanation-5: -General. Male mammals typically have rudimentary mammary glands and nipples, with a few exceptions: male mice do not have nipples, male marsupials do not have mammary glands, and male horses lack nipples and mammary glands.