The values of osmotic potential ( π ) and pressure potential ( ρ ) of cells A, B, C and D are given below. Cell π ρ A -1.0 0.5 B -0.6 0.3 C -1.2 0.6 D -0.8 0.4 Identify the correct sequence that shows

Question

The values of osmotic potential ( π ) and pressure potential ( ρ ) of cells A, B, C and D are given below. Cell π ρ A -1.0 0.5 B -0.6 0.3 C -1.2 0.6 D -0.8 0.4 Identify the correct sequence that shows the path of movement of water from among the following.

TestHub · Accepted Answer

The movement of water occurs from low DPD cell to high DPD cell. DPD is equal but opposite to water potential (algebraic sum of solute or osmotic potential and pressure potential).
Ψw = Ψs + Ψp

Cell	Water potential (osmotic potential + pressure potential	DPD
A	-1+0.5=-0.5	+0.5
B	-0.6+0.3=-0.3	+0.3
C	-1.2+0.6=-0.6	+0.6
D	-0.8+0.4=-0.4	+0.4

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