Question

Write about Mammals.? (Their characteristics)

Answer 1

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`$\textbf{Mammals}$`


→ The body is different in shape and generally divided into head, neck, trunk and tail. The skin glands are multicellular and includes oil glands, wax glands etc.

→ Two pair of limbs are present, which helps in walking, climbing, flying etc.

→ The heart is four chambered, having two auricles and ventricles. Heart supplies oxygenated blood to all parts of the body.

→ Pair of kidneys are present, which helps in excreting waste from the body.

→ They respire through lungs. Lungs are spongy and elastic.

→ Digestive system is complete. Teeth are also present. They develop in sockets and grow in two sets, a) permanent teeth and b) temporary teeth. Teeth are of four types.

→ Distinct liver and pancreas are present.

→ Ex :- Human beings, Kangaroo, elephant, giraffe etc.

Answer 2

Characteristics Of Mammals

Today as we travel around the globe we are able to find thousands of mammal species occupying this beautiful world. And the scientist are discovery a new species then and then. Mammals are vertebrates and are warm blooded animals. They have different characteristics that are far apart from other animal species. The unique feature of the mammal's family is that they feed their young ones with their milk produced by the mammary gland. And all most all the mammals give birth to their young ones.

The general structure of the mammalian characteristic are:

Mammals are endothermic vertebrates

Have hair and fur on the body

Have mammary glands

Four chambered hearts

Have sebaceous (fat secreting glands), sudoriferus (sweat), and scent glands.

Have heterodont dentation (different types of teeth)

Posses diaphragm

Posses one single jaw bone

Have three small bones in the middle of the ear