Question

three main features of class mammalia

Answer 1

mammalia is belong to tetrapoda
four chambered heart
warm blooded animals
skin is covered with hair
two pair of limbs
fertilization is internal
mainly they gives birth young ones

Answer 2

$\huge \text{Features\: Of\: Class\: Mamalia}$

➜ The exoskeleton is represented by epidermal outgrowths called hairs.

➜ Locomotor organs are typical pentadactyl fore limbs and Hind limbs, with digits ending in claws for nails.

➜ Respiratory organs are a pair of lungs.

➜ Heart is Four chambered. Aortic arch is on the left side .

➜ RBC are enucleate at maturity, except in camels.

➜ Brain is well developed. 12 pairs of cranial nerves are present.