Differentiate between members of each of the following pairs with reference to the phrases in brackets.
2. Hypertonic and isotonic solutions (number of solute molecules).
Hypertonic solution:
A hypertonic solution is a solution whose concentration is greater than that of the cell sap.
Isotonic solution:
An isotonic solution is a solution whose concentration is equal to the cell sap.
Hypertonic solution | Isotonic solution |
1. A hypertonic solution has low water concentration and high solute concentration as compared to the cell sap. | 1. An isotonic solution has the same water concentration and same solute concentration as the cell sap. |
2. The solution has high osmotic pressure. | 2. The solution has zero osmotic pressure. |
3. When a cell is placed in a hypertonic solution, then it will lead to the outward movement of solvent molecules by exosmosis. | 3. When a cell is placed in an isotonic solution then, there will no net movement of solvent molecules because the solute concentration is the same in the surrounding solution and the cell. |
4. The cell when placed in a hypertonic solution becomes plasmolyzed. | 4. The cell when placed in an isotonic solution, it becomes flaccid. |