Single ear ossicle of frog is

Malleus

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Incus

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Stapes (columella)

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None of the above

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Solution

The correct option is C Stapes (columella)
Mammals have three ear ossicles malleus, incus and stapes. But in case of frogs, only columella is present. Columella is a bone that contributes to hearing in amphibians, reptiles and birds, corresponding to the stapes in mammals.
Therefore, the correct answer is option C.

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