A plant that undergoes temporal separation of the steps of photosynthesis is administered a drug that prevents the stomata from opening at night. What effect will this have on the plant?

Question

Quizplus · Accepted Answer

Plants that undergo temporal separation of photosynthesis, such as those using the CAM pathway, open their stomata at night to fix CO2. If a drug prevents the stomata from opening at night, the plant cannot fix CO2, which is necessary for the Calvin cycle to occur during the day. However, the light reactions do not directly require CO2 and can still occur as long as light is available.

A Plant That Undergoes Temporal Separation of the Steps of Photosynthesis