Answer:
organism, called Paramecium. The contractile vacuole is a specialized organelle responsible for maintaining osmotic balance and regulating the water content within the cell. Paramecium lives in freshwater environments, where water continuously enters the cell through osmosis. The contractile vacuole collects excess water from the cytoplasm and pumps it out of the cell through a series of canals. This process helps Paramecium prevent the cell from bursting due to excessive water intake. The contractile vacuole also helps in removing waste materials from the cell. The picture shows a spherical contractile vacuole with multiple canals leading to the cell's surface, through which water is expelled. Overall, the contractile vacuole is a vital organelle for maintaining the internal balance and survival of unicellular freshwater organisms like Paramecium.