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← Nature & AnimalsIf atmospheric humidity sharply decreases around a robust tree, which consequence affects xylem water transport?
A)Increased cavitation risk in xylem conduits✓
B)Decreased rate of mineral ion uptake
C)Reduced stomatal opening on leaves
D)Elevated rate of root cellular respiration
💡 Explanation
Lower humidity increases the transpiration rate from leaves, pulling more water through the xylem. This increased tension creates greater negative pressure, because it increases the likelihood of air bubble forming via cavitation, therefore blocking xylem vessels, rather than primarily impacting mineral uptake.
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