Botany - Transport in Plants Question with Solution | TestHub

Water potential is the difference in the free energy or chemical potential per unit molar volume of water in a system and that of pure water at the same temperature and pressure. Water potential is represented by Greek letter$\mathrm{\Psi }$(psi) or$\mathrm{\Psi }\mathrm{w}$. Water potential is the sum total of$\mathrm{\Psi }\mathrm{s}$and$\mathrm{\Psi }\mathrm{p}$. Therefore,$\mathrm{\Psi }\mathrm{w}=\mathrm{\Psi }\mathrm{s}+\mathrm{\Psi }\mathrm{p}$