9. Photosynthesis
C3, C4 & CAM Plants
Multiple Choice
Multiple ChoiceWhy are C4 plants more suited to hot climates than C3 plants?
A
They do not close their stomata in hot, dry weather.
B
They evolved in cold weather but migrated to the tropics, where they were more suitable.
C
They suspend photosynthesis in the heat.
D
The same cells that bind carbon dioxide perform the Calvin cycle.
E
Unlike C3 plants, they keep fixing carbon dioxide even when the concentration of carbon dioxide in the leaf is low.
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