What Do Both the C₄ and CAM Pathways of Photosynthesis

question 62

Multiple Choice

What do both the C₄ and CAM pathways of photosynthesis allow plants to do?

• A) to perform photosynthesis in the absence of carbon dioxide
• B) to outcompete C₃ plants in cool, dry conditions
• C) to keep stomata partially or completely closed during the hottest parts of the day
• D) to take up carbon dioxide at night and then store it as an acid until the day

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