Suppose two living plant cells are in contact with each other such that water, but NOT solutes, can pass between them. Also suppose that the cells have the same water potential, and that one cell has ψ_P = 0.3 MPa and ψ_S = -0.5 MPa, while the other cell has ψ_S = -0.3 MPa. What is the ψ_P of the second cell?

Question

Quizplus · Accepted Answer

Since the water potential (ψ) is the same for both cells, and ψ = ψ_P + ψ_S, the second cell must have ψ_P = 0.1 MPa to maintain the same water potential as the first cell.

Suppose Two Living Plant Cells Are in Contact with Each