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Nature & Animals

Which 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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