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← Nature & AnimalsWhich phenomenon results when a leafy vascular plant lacks soil moisture?
A)Increased xylem tension and cavitation✓
B)Reduced phloem osmotic pressure gradient
C)Enhanced guttation and root pressure
D)Decreased stomatal transpiration resistance
💡 Explanation
Increased xylem tension and cavitation happens because water column tensile strength is exceeded during transpiration through the cohesion-tension mechanism; therefore xylem conduits embolize rather than maintaining continuous water flow due to strong hydrostatic root pressure.
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