Botany - Transport in Plants Question with Solution | TestHub

Water potential is the difference in the free energy or chemical potential per unit molal volume of water in a system and that of pure water at the same temperature and pressure. It is represented by greek letter$\mathrm{\Psi }$(psi) or more accurately${\mathrm{\Psi }}_{\mathrm{w}}$

Water potential or${\mathrm{\Psi }}_{\mathrm{w}}$is the sum total of${\mathrm{\Psi }}_{\mathrm{s}}\mathrm{ }\mathrm{a}\mathrm{n}\mathrm{d}\mathrm{ }{\mathrm{\Psi }}_{\mathrm{p}}$.

${\mathrm{\Psi }}_{\mathrm{w }}= {\mathrm{\Psi }}_{\mathrm{s }}+ {\mathrm{\Psi }}_{\mathrm{p}}$

where${\mathrm{\Psi }}_{\mathrm{s}}\to$solute potential

${\mathrm{\Psi }}_{\mathrm{p}}\to$pressure potential