Penguins, Seals, and Tuna Have Body Forms That Permit Rapid

question 26

Multiple Choice

Penguins, seals, and tuna have body forms that permit rapid swimming, because

• A) all share a common ancestor at some point in the past.
• B) all of their bodies have been compressed since birth by intensive underwater pressures.
• C) flying, pregnancy, and gill-breathing all require similar adaptations in form.
• D) the shape is a convergent evolutionary solution to the need to reduce drag while swimming.
• E) this is the only shape that will allow them to maintain a constant body temperature in water.

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