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Question

________ is the group of fishes in which fins are supported with bony or horny spines which are directly attached to the body.


  1. Osteichthyes

  2. Chondrichthyes

  3. Sarcopterygii

  4. Actinopterygii


Solution

The correct option is D

Actinopterygii


Actinopterygii is a sub-class of bony fishes (Osteichthyes) in which fins are supported with bony or horny spines which are directly attached to the body. Sarcopterygii is another sub-class of bony fishes, that possess fleshy, lobed, paired fins, which are joined to the body by a single bone.

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