Q. Which one is incorrect statement?
A) Movement of water is expressed in terms of free energy
B) Free energy determines the direction by which physical and chemical changes should occur
C) Water potential is the sum of free energy of water molecules in pure water and in any other system
D) Water potential of pure water is zero
Explanation
The water potential ($\Psi_{w}$) in a plant cell or tissues is equal to the algebraic sum of solute potential ($\Psi_{s}$) due to dissolved solutes and the pressure potential ($\Psi_{p}$) due to pressure developed within the cells or issues, i.e., $\Psi_{w} = \Psi_{s} + \Psi_{p}$.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.