Question

characteristic features of mammals

Answer 1

Mammals -

1. they have 4 chambered heart.

2. they have mammary gland .

3. they have fur and hair on their body

4. they are endothermic vertebrates.

5. they posses diaphragm

Hope it is helpful. ✌️

Answer 2

Answer:

(i) Presence of mammary glands in females to nourish the young ones.

(ii) Body covered with hair.

(iii) External ear pinna present.

(iv) Heart is four-chambered.

(v) They are homoiothermous.

(vi) They are viviparous except platypus and spiny ant-eater.