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← Nature & AnimalsWhich outcome occurs when xylem walls weaken in tall trees?
A)Increased risk of cavitation events✓
B)Elevated rate of guttation occurs
C)Decreased water uptake capability follows
D)Lowered stomatal closure effectiveness results
💡 Explanation
Increased cavitation occurs because weakened xylem causes a reduction in xylem structural integrity, leading to increased tension and possible vessel collapse due to loss in cohesion and adhesion, which makes cavitation more likely rather than maintaining water flow.
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