Question

A fat called blubber could be obtained from
A.Bat
B.Dolphin
C.Shark
D.Blue whale

Answer 1

Hint: Blubber is a dense layer of fat immediately under the skin of all marine mammals, also called adipose tissue. Blubber coats the animals' whole body.

Complete answer:
With the exception of their fins, flippers, and flukes, blubber covers the whole body of animals such as dolphins, whales, and walruses.

A significant part of the anatomy of a marine mammal is blubber. It stores electricity, insulates heat, and buoyancy increases.
In the dense, sticky layer of blubber, energy is stored. Both proteins (mostly collagen) and fats (mostly lipids) are part of the energy contained in blubber. The capacity of blubber to use these accumulated nutrients means that for long periods of time, marine mammals are not required to hunt for food. For example, nursing mothers build up thick stores of blubber before giving birth. In addition to feeding infants, mothers are unable to look for food on a daily basis. They rely on the energy in their blubber that is stored.

Blubber also insulates, or helps keep, marine mammals warm in cold waters. There is a need for this insulation. Mammals are warm-blooded, ensuring that their body temperature remains around the same regardless of the outside temperature. Blood vessels in blubber constrict, or become smaller, in cold water, to insulate the marine mammal. Constricted blood vessels decrease blood flow, thus decreasing the energy needed to heat the body. This is conserving heat.
Eventually, blubber allows marine animals to remain buoyant, or float. In general, blubber is less dense than the ocean water around it, so animals float naturally.

Hence, the correct answer is option (B)

Note: As a staple part of their diet, many ancient cultures of the Arctic relied on blubber. For example, Muktuk, native to the U.S. state of Alaska and the Canadian Arctic, is a traditional food eaten by the Eskimo and Inuit people. Thick slices of whale blubber and skin are Muktuk. Besides being an excellent source of energy and vitamin D, for these Arctic people, muktuk was also the main source of vitamin C.