How does water stress affect photosynthesis?

How does water stress affect photosynthesis?
  1. Increases CO₂ availability
  2. Increases metabolic activity of leaves
  3. Reduces CO₂ availability and reduces metabolic activity of leaves
  4. Has no effect on photosynthesis

Solution

Water stress causes the stomata to close, reducing the CO₂ availability, and makes leaves wilt, reducing the surface area of leaves and their metabolic activity.

Asked in: NCERT

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