Which consequence results when excessive transpiration overwhelms tree capabilities?

💡 Explanation

Xylem tensions grow during transpiration due to water evaporation; increased tensions lead to xylem cavitation (air bubble formation disrupting water columns) because pressures become too negative. Therefore, A is correct, rather than optimized transport or phloem changes.

• Which physiological effect results when a hibernating marmot experiences sudden environmental warming above freezing?
• Which outcome occurs when larval hormone suppression fails but imaginal discs differentiate?
• Which process dictates enhanced growth in legumes when specific bacteria are present?
• Which inhibitory outcome arises when high oxygen concentrations compete with carbon dioxide binding to Rubisco?
• Which risk increases when avian plumage develops significant oil fouling?
• Which physiological adaptation shifts hibernating marmots abruptly from torpor to active state?