Every plant around you has vacuoles in almost all its cells. But for an example you can see, get a plant with purple coloration—a flower petal, an ornamental plant with purple on its leaves, or a food plant with purple leaves like red cabbage (which is really more purple). Every bit of that purple color is in the cell vacuole. read more
In certain organisms, usually single-celled organisms lacking a cell wall, there exists a special kind of vacuole, called a contractile vacuole. A contractile vacuole works just as the name suggests in that it expands and contracts. read more