Which of the following is true about Class Reptilia?

Tympanum represents the ear

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All reptiles have a three chambered heart

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They are homeotherms

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They are viviparous

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Solution

The correct option is A Tympanum represents the ear
In reptiles, external ear is absent; the ear is represented by a tympanum. Most reptiles have a three chambered heart, except crocodiles, which have a four chambered heart. Reptiles are poikilotherms (cold-blooded), and oviparous (egg-laying).

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