What would you expect when the cell is placed in a hypertonic solution?
An increase in the volume of the cell
A decrease in the volume of the cell
No net change in the volume of the cell
None of these
When a cell is placed in hypertonic solution, water from the cell sap will move into the hypertonic solution because of the higher concentration of the solution. The cell will decrease in its volume. This is called exosmosis.
Hence, the correct option is b.