Plant Adaptations · Botany

Which photosynthetic pathway is a common physiological adaptation in succulents to minimize water loss by keeping stomata closed during the day?

  1. C3 pathway
  2. C4 pathway
  3. CAM pathway
  4. Glycolate pathway
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Correct answer: CAM pathway

CAM plants open their stomata at night to fix CO2 into organic acids and keep them closed during the day. This temporal separation of gas exchange greatly enhances water-use efficiency.

Difficulty: Medium Question 5 of 20

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