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← Nature & AnimalsWhich outcome occurs when transpiration in tall trees peaks during midday sun causing excessive water tension?
A)Xylem exhibits reversible cavitation events✓
B)Root pressure efficiently moves water
C)Phloem transport rate temporarily increases
D)Stomata remain closed minimizing tension
💡 Explanation
Xylem exhibits cavitation because of excessive tension created by increased transpiration overcomes the limit of water's cohesive forces inside xylem elements, therefore causing air bubbles, rather than continuous water flow driven by root pressure.
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