Question

Net movement of water is from

• A. low DPD to high DPD
• B. high DPD to low DPD
• C. DPD gradient plays no role
• D. none of the above

Answer 1

The correct option is A low DPD to high DPD

Diffusion pressure deficit (DPD) is the reduction in diffusion pressure (DP) of water in a system over its pure state. Diffusion pressure is the pressure exerted by the molecules that are undergoing diffusion. DP of pure solvent is maximum and pure water has zero DPD. DPD determines the direction of movement of water. Water always moves from an area of lower DPD to the area or cell of higher DPD.