Which of the Following Is a Major Difference Between the Chondrichthyans

question 131

Multiple Choice

Which of the following is a major difference between the chondrichthyans and the ray-finned fishes?

• 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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