The tympanum (ear drum) is absent in:

Rays

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Carilaginous Fishes

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Bony fishes

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All of the above

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Solution

The correct option is D All of the above
The tympanic membrane is a thin sheet that separates the external ear and middle ear in humans and other tetrapods.
It is responsible for transmitting sound from the air to the ossicles inside the middle ear.
It is found in vertebrates except for pisces.
Hence, the correct answer is option D.

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In the human ear, which bone is connected with the tympanum?

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