Which of the following represents the correct combination of a taxonomic group with its characteristics, without any exception?

Easy

A

Aves - Warm blooded animals with 4 chambered heart and without glands in the skin
B

Amphibia - Cold blooded animals with two pairs of limbs and without tail
C

Reptilia - Cold blooded animals with tympanum and exhibit internal fertilisation, direct development
D

Mammalia - Warm blooded animals with 4 chambered heart and pinna

Solution

All Reptiles are cold blooded animals and have tympanum. All Reptiles exhibit internal fertilization and direct development. In all Aves, oil gland is present in the skin at the base of the tail. Among Amphibians, limbs are absent in Ichthyophis. Among Amphibians, tail is present in urodeles (e.g. Salamandra). Among Mammals, pinna is absent in Prototherians (e.g., Platypus).

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