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← Nature & AnimalsWhich outcome occurs when water availability decreases and xylem sap's osmotic pressure gradients change within a plant’s root system undergoing transpiration?
A)Increased risk of xylem embolism✓
B)Elevated rate of nutrient absorption
C)Enhanced root turgor pressure
D)Decreased water potential gradient
💡 Explanation
Decreasing water can lead to xylem embolism through cavitation because increased negative water pressure will compromise the transpirational cohesion-tension mechanism, therefore leading to air bubbles, not increased absorption, rather than maintained water gradients.
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