Hairs occur in all mammals except those of the order:
A
Chiroptera
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B
Rodentia
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C
Cetacea
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D
Primates
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Solution
The correct option is C Cetacea Cetacea is an order of animals that comes under the class Mammalia. It includes whales, dolphins, porpoises etc. These animals are adapted to aquatic life with fish-shaped bodies and broad, paddle-like forelimbs (called flippers). Posterior limbs are absent, many have a thick layer of blubber under the skin which is usually smooth and devoid of hairs. They are very intelligent animals.