Increasing the number of stomata per unit surface area of a leaf when atmospheric carbon dioxide levels decline is most analogous to a human ________.
A) breathing faster as atmospheric carbon dioxide levels increase
B) putting more red blood cells into circulation when atmospheric oxygen levels decline
C) removing red blood cells from circulation when atmospheric oxygen levels increase
D) increasing the volume of its lungs when atmospheric carbon dioxide levels increase

Question

Quizplus · Accepted Answer

Increasing the number of stomata per unit surface area of a leaf when atmospheric carbon dioxide levels decline is an adaptation that allows for more efficient photosynthesis under conditions of lower atmospheric CO2 concentrations. Similarly, when atmospheric oxygen levels decline, humans increase the number of red blood cells in circulation to increase oxygen delivery to tissues.

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