Major evolutionary changes have resulted in anatomical and physiological adaptations that optimize the rate of gas exchange in animals by each of these factors except ________.

Question

Quizplus · Accepted Answer

Increasing the diffusion constant for each gas is not a major evolutionary change that has resulted in optimizing the rate of gas exchange in animals. The diffusion constant is a physical constant for each gas and cannot be changed by evolution. The other options (A, B, and C) are all major evolutionary changes that have resulted in optimizing the rate of gas exchange in animals.

Major Evolutionary Changes Have Resulted in Anatomical and Physiological Adaptations