Which outcome affects tall trees when root pressure declines during prolonged drought?

💡 Explanation

Xylem cavitation risk increases because the cohesion-tension mechanism, which relies on continuous water columns, becomes vulnerable without root pressure to counteract transpirational pull; therefore air bubbles form more readily, rather than efficient transport.

• Which metabolic shift enables CAM plants to survive in arid climates despite carbon dioxide limitation?
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• Which outcome results when the stomata of a C4 plant close during daylight hours in arid conditions?
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