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Which outcome impacts tall tree water transport when soil dries significantly?

A)Increased cavitation within xylem vessels
B)Enhanced stomatal opening for photosynthesis
C)Elevated root respiration and ATP use
D)Decreased phloem osmotic pressure gradient

💡 Explanation

Soil drying increases tension, and the resulting air bubbles induce cavitation within the water columns inside xylem vessels. This hinders water's upward movement because cohesion-tension relies on continuous liquid columns, rather than vapor lock disrupting it.

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