List the characteristic features of class Mammalia.

1.	List the characteristic features of class Mammalia.
Answer» • Have mammary glands to nourish young ones. • Have two pairs of limbs. • Skin has hairs. • External ears or pinna present. • Different types of teeth in jaw. • Viviparous. Direct development.

Answer»

• Have mammary glands to nourish young ones.

• Have two pairs of limbs.

• Skin has hairs.

• External ears or pinna present.

• Different types of teeth in jaw.

• Viviparous. Direct development.

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