Which of the following lacks a tympanum?

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(D) The tympanum,or eardrum,is a membrane that transmits sound vibrations to the inner ear. In most tetrapods,including frogs,lizards,and birds,the ty

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Snake

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(D) The tympanum,or eardrum,is a membrane that transmits sound vibrations to the inner ear. In most tetrapods,including frogs,lizards,and birds,the tympanum is present on the surface of the head. However,snakes lack an external ear opening and a tympanum. Instead,they detect sound vibrations through their jaw bones,which are connected to the inner ear apparatus.

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