Which one of the following groups of animals | vedclass

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(C) The correct option is $C$. $A$: Reptiles like crocodiles have a $4$-chambered heart,so this is not true for all reptiles. $B$: Chordates include A

Vedclass · Accepted Answer

Chondrichthyes : possess cartilaginous endoskeleton

Vedclass · Answer

(C) The correct option is $C$. $A$: Reptiles like crocodiles have a $4$-chambered heart,so this is not true for all reptiles. $B$: Chordates include Agnatha (jawless vertebrates),so this is not true for all chordates. $C$: All members of the class Chondrichthyes are characterized by a cartilaginous endoskeleton. This is a defining feature without exception. $D$: Mammals like Ornithorhynchus (platypus) and Tachyglossus (echidna) are oviparous (egg-laying),so this is not true for all mammals.

Which one of the following groups of animals is correctly matched with its characteristic feature without any exception?

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