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← Nature & AnimalsWhich risk increases when transpiration demand exceeds root water uptake?
A)Increased xylem cavitation risk✓
B)Increased leaf boundary layer thickness
C)Accelerated stomatal guard cell division
D)Decreased phloem loading efficiency
💡 Explanation
Cavitation risk rises because an imbalance leads to excess negative pressure, inducing air bubble formation via xylem tension, decreasing water flow; therefore compromising function, rather than influencing boundary layers or phloem loading, as transpiration influences xylem and root systems.
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