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← Nature & AnimalsWhich outcome occurs to xylem sap if air leaks into a tall tree's transport vessels, disrupting pressure?
A)Decreased water cohesion to xylem✓
B)Increased osmotic water uptake
C)Enhanced translocation of sugars
D)Elevated rate of root pressure
💡 Explanation
Decreased water cohesion occurs because introducing air breaks the water column's continuity, therefore disrupting the cohesion-tension mechanism required for capillary action. This reduces xylem tension, rather than causing elevated root pressure or increased osmotic absorption.
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