Which of the Following Statements About the Size of an Organism's

Question

Which of the following statements about the size of an organism's gas exchange surface is true?
A)Organisms with small demands generally still have large gas exchange surfaces.
B)Extra gill surface area in a fish would help lower the drag forces in water.
C)The surface area of a gas exchange surface is sized to match the needs of the organism.
D)The lungs of active mammals have smaller gas exchange surfaces than the lungs of less active mammals.

Accepted Answer

Gas exchange surfaces need to match the needs of the organism, whether big or small. Animals with high metabolic rates or high oxygen demands typically have larger gas exchange surfaces compared to those with lower demands.