CAM Plants, Such as Cacti and Agaves, Use a Different

question 60

Multiple Choice

CAM plants, such as cacti and agaves, use a different carbon-fixing pathway than most other plants, allowing them to ____.

• A)keep their stomata open all day and night to increase the efficiency of photosynthesis
• B)keep their stomata closed all day and night to decrease the amount of CO₂ absorbed
• C)open their stomata only during the day to increase the amount of CO₂ absorbed
• D)close their stomata only at night to reduce the amount of water lost to evaporation
• E)open their stomata only at night to reduce the amount of water lost to evaporation

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