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← Nature & AnimalsWhich force precipitates leaf wilting when soil dries?
A)Diminished xylem transpiration pull✓
B)Increased phloem osmotic potential
C)Enhanced guard cell turgor pressure
D)Elevated root respiration anaerobic threshold
💡 Explanation
Reduced water in soil diminishes water’s availability for root uptake, weakening the xylem transpiration pull, because this process drives water movement to leaves by creating tension; therefore, wilting occurs, rather than continued turgor due to water maintenance mechanisms.
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