A Major Difference Between the Chondrichthyans and the Ray-Finned Fishes

question 123

Multiple Choice

A major difference between the chondrichthyans and the ray-finned fishes is that

• A) only chondrichthyans have a lung or swim bladder.
• B) chondrichthyans have a cartilaginous skeleton,whereas ray-finned fishes have a bony skeleton.
• C) only ray-finned fishes have paired fins.
• D) chondrichthyans evolved in fresh water,whereas ray-finned fishes evolved in salt water.
• E) only chondrichthyans have true jaws.

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