Question

pinna is part of external ear and it is found found in mammals do aves and reptails show external ear in any form

Answer 1

Answer:

External Ear. The external ear (pinna) is a strictly mammalian innovation. Although birds and reptiles and even frogs have a tympanic membrane, it lies flat on the surface of the head. Mammals, by contrast, have prominent external ears that are specialized for collecting sound waves

Answer 2

Answer:

birds and reptiles have no external ear. they simply have tympanic membrane attached to the bones of ear.

Columella auris represents the middle ear bones in reptiles, amphibians and birds that act the same as malleus ,incus and stapes in mammals.

The part of ear is the inner ear as it performs both the hearing and the balancing function.

And it is said the primary function of ear is Balancing and not hearing.

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