The potential for evaporative water loss by terrestrial organisms
3-15-2013
A) decreases with increased vapor pressure deficit.
B) increases with decreased vapor pressure deficit.
C) increases with increased vapor pressure deficit.
D) None of the choices are correct.

Question

Quizplus · Accepted Answer

Evaporative water loss refers to the amount of water that organisms lose through evaporation. Vapor pressure deficit (VPD) is a measure of atmospheric dryness, determined by the difference between the partial pressure of water vapor in the air and the saturation vapor pressure at a given temperature. As VPD increases, the air becomes drier and more conducive to evaporation, resulting in increased evaporative water loss by terrestrial organisms. Therefore, choice C (increases with increased vapor pressure deficit) is the correct answer.

The Potential for Evaporative Water Loss by Terrestrial Organisms