The vacuoles that perform the latter are called the contractile vacuoles . They take in excess water and then squeeze it out of the cell to prevent cytolysis or the bursting of the cell. The other task of the vacuole is also very important. It stores enzymes and toxic wastes that cannot be stored anywhere else in the cell. In some plants, especially certain acacia trees, the vacuole contains toxins to stop animals from eating the plant.
Animals have vacuoles to store wastes.