First slide

Classification of Animals

Question

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

Easy

A

Vertebrates – Presence of jaws
B

Osteichthyes – Oviparous animals
C

Mammals – Terrestrial animals
D

Reptiles – Internal fertilisation

Solution

All Reptiles exhibit internal fertilisation. Among Vertebrates, jaws are absent in Cyclostomes. Among Osteichthyes, some fishes are viviparous (e.g., Gambusia). Among Mammals, some are aquatic (e.g. whales).

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