PLANTS

CAM PLANTS

• A plant that utilizes the Crassulacean acid metabolism as an adaptation for arid conditions
• CO2 entering the stomata during the night is converted into organic acids
• Organic acids release CO2 for the Calvin cycle during the day
• thick, reduced leaves with a low surface-area-to-volume ratio
• Stomata sunken into pits, thick cuticle

EXAMPLES

• Some species of geraniums
• Cactus
• Pineapples
• Agave

C3 PLANTS

• utilizes the C3 carbon fixation pathway to convert CO2 into an organic compound
• CO2 is first fixed into a compound containing 3 carbon atoms before entering the Calvin cycle
• Ex: dandelions, trees, cotton, rice
• Grow rapidly and need plenty of water

C4 PLANTS