Increasing the number of stomata per unit surface area of a leaf when atmospheric CO₂ levels decline is most analogous to a human

Question

Quizplus · Accepted Answer

Increasing the number of stomata per unit surface area of a leaf when atmospheric CO₂ levels decline is a physiological response to ensure efficient CO₂ uptake for photosynthesis. Similarly, putting more red blood corpuscles (RBCs) into circulation when atmospheric O₂ levels decline is a physiological response to ensure efficient oxygen uptake for respiration. This analogy is not applicable to the other options.

Increasing the Number of Stomata Per Unit Surface Area of a Leaf