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NTA Abhyas NEET2020BotanyAnimal KingdomPractice

In which of the following pairs, is the ear represented by the tympanum?

Options

  1. AFishes and amphibians
  2. BAmphibians and reptiles
  3. CReptiles and birds
  4. DAmphibians and mammals

Correct answer

B. Amphibians and reptiles

Step-by-step solution

Amphibians and reptiles do not have external ear openings. Rather a tympanum represents the ear in both the classes. Mammals have external pinnae which acts a funnel for the entry of sound which reaches the tympanum inside. Birds also do not posses external ears. They have an external passage hidden under the feathers at the side of the head.

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