Which group of plants responds to increased CO₂ with the highest biomass enhancement ratio?

Question

Quizplus · Accepted Answer

C₃ plants show the highest biomass enhancement ratio in response to increased CO₂ levels because their photosynthetic efficiency is directly limited by the amount of CO₂ available, unlike C₄ and CAM plants which have mechanisms to concentrate CO₂ and are less sensitive to changes in atmospheric CO₂ levels.

Which Group of Plants Responds to Increased CO₂ with the Highest