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Question

Which one of the following characters is not typical of the class Mammalia?

A
Alveolar lungs
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B
Ten pairs of cranial nerve
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C
Six cervical vertebrae
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D
Both B and C
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Solution

The correct option is D Both B and C
Most of the Mammals are terrestrial animals which breath through lungs. Lungs are alveolar in nature comprised of a number of small bags called alveoli. All mammals whether camel or whale or giraffe or Man have seven cervical vertebrae. Mammals have 12 pairs of cranial nerves. Thus, the correct answer is option D.

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