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AssignmentMultiple Select

Evidence for Evolution

Question 2 • AFC AP Biology B5

Which of the following provides evidence that sharks and dolphins have experienced convergent evolution? Check all that apply.Dolphins and sharks have dorsal fins.Sharks have a hydrodynamic body shape like dolphins.Sharks and dolphins feed on different types of prey.Both dolphins and sharks use oxygen from the water to survive.The size of a dolphin skull has changed, while sharks have remained unchanged.Sharks and dolphins have experienced similar adaptations over time.

Answer
A
Dolphins and sharks have dorsal fins.
B
Sharks have a hydrodynamic body shape like dolphins.
C
Sharks and dolphins feed on different types of prey.
D
Both dolphins and sharks use oxygen from the water to survive.
E
The size of a dolphin skull has changed, while sharks have remained unchanged.
F
Sharks and dolphins have experienced similar adaptations over time.

Explanation

Convergent evolution occurs when unrelated groups independently develop similar traits in response to similar conditions. Both sharks and dolphins have dorsal fins and streamlined, hydrodynamic body shapes that help them move through water, so A and B are evidence. Their similar adaptations over time also support convergent evolution (F). Dolphins breathe air with lungs, unlike sharks, which extract oxygen from water, so D is not correct.

AI-written and checked against the verified answer.

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