When adequate light is available, the overall rate of photosynthesis is dependent on the rate of A) Ca⁺⁺ levels B) Sucrose accumulation C) Starch accumulation D) Phytochrome concentration E) Carbon dioxide fixation

Question

Quizplus · Accepted Answer

The overall rate of photosynthesis when light is sufficient primarily depends on the rate of carbon dioxide fixation. This is because, under adequate light conditions, the light-dependent reactions of photosynthesis proceed at a maximum rate, making the light-independent reactions (Calvin cycle), where CO2 is fixed into sugars, the limiting step for the overall photosynthesis process.

When Adequate Light Is Available, the Overall Rate of Photosynthesis