First slide

Classification of Animals

Question

Which of the following characteristic features holds true for all the animals of the corresponding group?

Moderate

A

Pinnae are present; dentition is diphyodont - Mammalia
B

Presence of feathers and beak - Aves
C

All are terrestrial animals with crawling mode of locomotion - Reptilia
D

Gills are without operculum; air bladder regulated buoyancy - Osteichthyes

Solution

All birds have beak and feathers.
Pinnae are absent in Platypus (Mammals).
Bony fishes have operculum and air bladder
Turtles are aquatic among reptiles.

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