Heterocercal tail is found in

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(A) heterocercal tail is a type of tail fin where the vertebral column extends into the upper lobe,making it larger than the lower lobe.This type of t

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Cartilaginous fishes

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(A) heterocercal tail is a type of tail fin where the vertebral column extends into the upper lobe,making it larger than the lower lobe.This type of tail is a characteristic feature of cartilaginous fishes (Class $Chondrichthyes$),such as sharks and rays.It acts as a steering organ and provides lift during locomotion.

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