Question

Blubber is characteristic of
A)Ostrich
B)Platypus
C)Whale
D)Shark

Answer 1

Hint: Blubber is that the thick layer of fat under the skin of marine mammals. It covers the whole body of animals.

Complete answer:
Blubber could be described as a thick layer of fat, also called fatty tissue, directly under the skin of all marine mammals. It's a vital part of a marine mammal's anatomy. It stores energy, insulates heat, and increases buoyancy.

Function:
1)Storing energy: Energy is stored within the thick, oily layer of blubber. Energy stored in blubber includes proteins and fats. The flexibility of blubber to use these stored nutrients means marine mammals aren't forced to look for food for long periods of time. Nursing mothers build up thick stores of blubber before birth. Additionally to feeding offspring, mothers cannot regularly explore for food. They depend upon the energy stored in their blubber.
2)Blubber also insulates marine mammals, and helps keep them warm in icy waters. Mammals are warm-blooded. Some marine mammals, like sea otters, have a thick coat, additionally as blubber, to insulate them. To insulate the marine mammal, blood vessels in blubber constrict, or get smaller, in cold water. Constricted blood vessels reduce flow of blood. This conserves heat.
3)Buoyancy: Blubber also helps marine mammals stay buoyant, or float. It is less dense than ocean water surrounding it, so animals float naturally.
4)Animals with thickest blubber, like whales, are found in Arctic and Antarctic regions. In these, blubber is a foot thick. The thickness of their blubber doesn't indicate better energy storage, insulation, or buoyancy, however. Those characteristics are determined by the property of the blubber.

Hence, the correct answer is option (C)

Note: Not all fat is blubber: Blubber is different than most forms of fat. Blubber is far thicker and contains more blood vessels than the fat found in land animals, including humans. Blubber is so unique that several marine biologists don't refer to blubber as fat in any respect. For them blubber could be a unique form of connective tissue between the animal's skin and its internal organs.