Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← Nature & AnimalsWhich outcome occurs when increased atmospheric back-pressure impacts plant transpiration?
A)Decreased xylem sap ascent rate✓
B)Higher root metabolic oxygen demand
C)Increased phloem loading efficiency rate
D)Greater stomatal aperture negative pressure release
💡 Explanation
The xylem sap ascent rate reduces because an increase in atmospheric back-pressure decreases the water potential gradient between the leaves and the atmosphere, limiting transpiration. Therefore, the transpiration-driven water movement diminishes, rather than stomatal function being directly impacted, due to external limitations.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Nature & Animals →- Which risk increases when bird trachea pressure surges?
- Which outcome occurs when bird feathers lack sufficient barbule interlocking hooks during preening?
- Which consequence results when a soaring bird's air sacs malfunction during thermalling?
- Which outcome results when soil lacks symbiotic bacteria near soybean plants?
- Damage affecting coral cellular respiration results in which effect, considering zooxanthellae algal symbiosis?
- Which process maintains wetland soil fertility when flooding?
