Which outcome occurs when humidity decreases around a sunflower?

💡 Explanation

Transpiration relies on water potential differences; decreased humidity increases this gradient, thereby accelerating the cohesion-tension mechanism pulling water up the xylem, because rate of evaporation increases sharply. Therefore, xylem flow increases, rather than sucrose transport which relies on pholem and osmotic gradients.

• Which outcome results from disrupted geomagnetic alignment during migration?
• Which mechanism impairs avian flight during periods of prolonged heavy rainfall, increasing effective stall speed?
• Which risk occurs if nectar sources shift during waggle dance?
• Which risk increases for birds experiencing rapid ascent into colder, drier air?
• Which outcome impairs scout bees' directive precision when obstacles displace the waggle?
• Which stress response occurs in CAM plants when water availability critically decreases?