Suppose two living plant cells are in contact with each other so that water, but not solutes, can pass between them. The
cells have the same water potential. One cell has ?P ? 0.3 MPa and ?S = ?0.5 MPa, while the other cell has ?S = ?0.3
MPa. What is the ?P of the second cell?
a. ?P = ?0.8 MPa
b. ?P = 0 MPa
c. ?P = 0.5 MPa
d. ?P = 0.8 MPa
e. ?P = 0.1 MPa
ANSWER: e
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