BIOLOGY Volume 2 - A Guide to General Biology - 2004

13. TRANSPORT IN PLANTS

13.1. Plant Water Relations

13.1.8. Osmotic Movement of Water from Cell to Cell

Let us consider the situation illustrated in Fig. 13.4, where two plant Cells with different Water potentials are in contact with each other.

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Fig. 13.4. Two adjacent plant cells.

13.4. a) Which Cell has a higher (less negative) water potential?

b) In which direction does water move via osmosis?

c) At equilibrium, both cells will have the same water potential, equal to the arithmetic mean of their initial values, i.e., -1000 kPa.

Assuming that ψ₀ has remained virtually unchanged, determine what the equilibrium ψ_p values will be for cells A and B.

Last update: 06/08/2026

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