Scolidon or dog fish belong to the group of fishes called__________?
Correct answer: A. Cartilaginous fishes
- A. Cartilaginous fishes
- B. Bony fishes
- C. Running fishes
- D. Jawless fishes
Explanation
Scoliodon, or dogfish, has a skeleton made mainly of cartilage, so it belongs to the cartilaginous fishes. Bony fishes have an ossified skeleton, and dogfish are not jawless because they possess functional jaws; students may choose bony fishes because most familiar fishes are bony.
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