Under drought conditions, there is an increase in__________________?
Correct answer: D. All the above
- A. Pro line level
- B. Ethylene level
- C. Abscisic acid
- D. All the above
Explanation
Water stress generally increases proline and stress-related ethylene, while increased abscisic acid promotes stomatal closure and helps conserve water. Since all three are drought responses, the inclusive option is appropriate.
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