Whose water potential is less than the water potential of root hair during water absorption by root hair?

Study the following table showing the components of water potential in closely arranged mesophyll cells namely $A, B$ and $C$.

Cell	Osmotic Potential (MPa)	Pressure Potential (MPa)
$A$	$-0.21$	$0.05$
$B$	$-0.22$	$0.02$
$C$	$-0.23$	$0.05$

Identify two of the following,which show correct direction of water movement between two cells.
$I. A \rightarrow B$ $II. B \rightarrow C$ $III. C \rightarrow A$ $IV. C \rightarrow B$

The water potential and osmotic potential of pure water are

Define water potential and solute potential.

Explain why pure water has the maximum water potential.

Why is solute potential always negative? Explain $\Psi_{w} = \Psi_{s} + \Psi_{p}$.