Home Biology Organisms and Populations Organism and its Enviornment A thick layer of fat under the skin in aquat…
Biology Organisms and Populations Organism and its Enviornment Single Correct MCQ
Published on: August 13, 2026

A thick layer of fat under the skin in aquatic mammals essentially acts as __________

A
Food reservoir
B
Insulator
C
Conductor
D
Heat generator

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The correct answer is:
B

In aquatic mammals like seals and whales, this thick layer of fat—commonly known as blubber—acts as an insulator to reduce the loss of body heat in cold water.

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