Water potential consists of matric potential, osmotic or solute potential, hydrostatic pressure and gravitational pressure. Which of the following statement is true?
1
The matric potential values are always positive while the osmotic potential values are always negative
2
The matric potential determines the interaction of solid surfaces such as cell walls and colloids with water
3
The matric potential values are always negative while the osmotic potential values are always positive
4
The osmotic or solute potential always measures the accumulation of free energy which is called ionic potential