A plant cell with a ΨS of -0.65 MPa maintains a constant volume when bathed in a solution that has a ΨS of -0.30 MPa and is in an open container. The cell has a

Question

Quizplus · Accepted Answer

Since the plant cell maintains a constant volume, its Ψ must be equal to the solution it is bathed in, which is -0.30 MPa. Therefore, we can use the equation Ψ = ΨS + ΨP, where ΨP is the pressure potential. Solving for ΨP, we get ΨP = Ψ - ΨS = (-0.30 MPa) - (-0.65 MPa) = +0.35 MPa. Therefore, the correct answer is choice C.

A Plant Cell with a ΨS of -0