First slide

Classification of Animals

Question

Which one of the following is a character of all amphibians, without any exception?

Moderate

A

Two pair of limbs provided with digits.
B

Skin is moist, not covered externally by scales
C

Body is divisible into head and trunk; tail is absent
D

Eyes are without eyelids

Solution

In amphibians, skin is moist and is without scales. Minute cycloid scales are embedded in the dermis in apodans (e.g., Ichthyophis). Limbs are absent in apodans (e.g., Ichthyophis). Tail is present in urodeles (e.g., Salamandra). The eyes have eyelids.

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