Animals that effectively use their body surface for gas exchange must
A) be terrestrial.
B) have a high ratio of body surface area to volume.
C) have a low ratio of body surface area to volume.
D) have a special kind of hemoglobin.

Question

Quizplus · Accepted Answer

Animals that effectively use their body surface for gas exchange need to have a high ratio of body surface area to volume. This is because gases such as oxygen and carbon dioxide are exchanged through the body surface, and a higher surface area-to-volume ratio allows for more efficient gas exchange. This is seen in animals such as flatworms and some aquatic invertebrates.

Animals That Effectively Use Their Body Surface for Gas Exchange