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← Nature & AnimalsWhich outcome prevents excessive xylem sap cavitation following leaf damage?
A)Pectin plugging of xylem vessel pits✓
B)Decreased root osmotic water uptake
C)Increased photosynthetic carbon fixation
D)Elevated leaf boundary layer resistance
💡 Explanation
Occlusion prevails because embolism spread through pit membranes is minimized by pectin deposition called 'pit clogging', therefore limiting xylem cavitation rather than altering root function since pit clogging is a targeted mechanism.
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