Fins Composed of Rod-Shaped Bones Surrounded by Thick Layers of Muscle

question 52

Multiple Choice

Fins composed of rod-shaped bones surrounded by thick layers of muscle are characteristic of:

• A)lobe-finned fishes.
• B)ray-finned fishes.
• C)hagfishes.
• D)lampreys.
• E)cartilaginous fishes.

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