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Why do the desert plants take up the carbon dioxide for photosynthesis at night?

  1. A
    To prevent water loss
  2. B
    To enhance carbon absorption
  3. C
    To release excess oxygen
  4. D
    No option is correct.

Solution & Step-by-step Explanation

Desert plants (xerophytes) follow Crassulacean Acid Metabolism (CAM) pathway. To minimize transpiration (water loss) due to the intense heat during daytime, they keep their stomata closed during the day. They open their stomata at night to absorb CO
2
​
and store it in the form of an intermediate acid, which is then utilized during the day for photosynthesis using sunlight.

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Why do the desert plants take up the carbon dioxide for photosynthesis at night?
A
To prevent water loss
B
To enhance carbon absorption
C
To release excess oxygen
D
No option is correct.

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Plant PhysiologyPhotosynthesisXerophytes

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