Question

Write the five salient features of Mammalia, give two examples.

Answer 1

1.they are warm blooded animals
2.they have four chambered heart.
3.they have mammary glands for production of milk to nourish their young.
4.they have sweat and oil glands.
5.they produce live young ones except platypus and echidna as they lay eggs.
eg: cat, human, whale, bat, rat

Answer 2

✌️✌️hey mate,

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➡️General features of Mammalia:

• The most unique mammalian characteristic is the presence of milk producing glands (mammary glands) by which the young ones are nourished.
• They are found in variety of habitats - polars ice caps, desserts, mountains, forests, grasslands and dark caves.
• They have two pairs of limbs, adapted for walking, running, climbing, burrowing, swimming or flying.
• The skin of mammals is unique in possessing hair.
• External ear or pinnae are present.
• Different types of teeth are present in the jaw.
• Heart is four chambered.
• They are homeothermous.
• Respiration is by lungs.
• Sexes are separate and fertilization is internal.
• Development is direct.
• The neck generally has seven cervical vertebrae.
They are Viviparous with few exceptions.

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thanks.....