NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

KINGDOM ANIMALS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is true about all mammals?
A
They give birth to their young alive.
B
They have hair as an outer covering.
C
They can live on both land and water.
D
They have wings.
Explanation: 

Detailed explanation-1: -Hair (and a coat of hairs, called fur or pelage) is uniquely mammalian. No other creature possesses true hair, and at least some hair is found on all mammals at some time during their lives. Hairs grow out of pits in the skin called follicles.

Detailed explanation-2: -The most important function of hair in mammals is that of insulating against cold by conserving body heat. The differing colours and colour patterns in hair coats can also serve purposes of camouflage and of sexual recognition and attraction among the members of a species.

Detailed explanation-3: -Types of Body Coverings Mammals have hair or fur, birds have feathers, reptiles have dry scales, amphibians have soft, moist skin, and fish have wet, slimy scales.

Detailed explanation-4: -All mammals have some hair on their skin, even marine mammals like whales, dolphins, and porpoises that appear to be hairless.

There is 1 question to complete.