Which of the following statements is incorrect about diffusion?

The statement that is incorrect about diffusion is: "Molecules move from region of lower concentration to that of higher concentration." In diffusion, molecules move from regions of higher concentration to regions of lower concentration until they are evenly distributed. This movement occurs in gaseous, liquid, and solid media, and no membrane is required to effect the movement of molecules. There is no degradation of soluble particles in solvents in the process of diffusion.