Multiple choice

Loss of turgor from the cells causes drooping of leaves during day, but they recover from it at night. This is called

  1. temporary wilting

  2. guttation

  3. permanent wilting

  4. exudation
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A Correct answer
Explanation

Temporary wilting occurs when plants lose turgor during the day due to high transpiration rates exceeding water uptake, but recover at night when transpiration slows and roots can catch up. Permanent wilting occurs when soil water is permanently unavailable. Guttation is water droplet excretion from leaf margins, while exudation is general oozing of fluids.

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