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.

Question

Quizplus · Accepted Answer

The shape of penguins, seals, and tuna for rapid swimming is a convergent evolutionary solution to reducing drag while swimming. This means that they evolved to have similar body shapes even though they are not closely related and do not share a common ancestor that had the same body form.

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