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प्रश्न
Endoskeleton of fishes are made up of cartilage and bone; classify the following fishes as cartilagenous or bony
Torpedo, Sting ray, Dogfish, Rohu, Angler fish, Exocoetus.
उत्तर
Cartilaginous fishes: Torpedo, Sting ray, and Dogfish. Bony fishes: Rohu, Angler- fish and Exocoetus.
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