Final answer:
CAM plants and C4 plants differ in the way they produce CO2 for the Calvin cycle.
Step-by-step explanation:
CAM (crassulacean acid metabolism) plants such as cacti differ from standard C4 plants such as corn in which of the following ways?
1. CAM plants minimize photorespiration whereas C4 plants do not.
2. CAM plants use both mesophyll and bundle sheath leaf cells for photosynthesis whereas C4 plants do not.
3. CAM plants are limited to producing CO₂ for the Calvin cycle during the day, while C4 plants produce CO₂ for the Calvin cycle both during the day and at night.
So, the correct answer is: CAM plants are limited to producing CO₂ for the Calvin cycle during the day, while C4 plants produce CO₂ for the Calvin cycle both during the day and at night.
Learn more about CAM plants and C4 plants