Which risk emerges during heat stress when root pressure is inadequate in herbaceous plants?

💡 Explanation

Cavitation ensues because inadequate negative pressure generation from transpiration overwhelms cohesive force in xylem, leading to air bubble formation. Cohesion-tension mechanism falters, therefore xylem becomes blocked rather than facilitating water transport, unlike pathogen suppression or symbiotic activity.

• Which risk increases for migratory birds flying near large airports?
• Which outcome occurs when a comb jelly experiences turbulence?
• Which outcome occurs when nitrogenase is inhibited in Rhizobium bacteria?
• Which outcome affects grassland nitrogen availability when bison grazing decreases?
• Which purpose does counterillumination achieve via bioluminescence in marine organisms?
• Which mechanism causes reduced photosynthetic rate when stomata close partially during midday heat stress?