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This statement is true. The contractile vacuole in freshwater protists like Amoeba is an organelle that collects excess water that enters the cell by osmosis. Collecting this water into the vacuole requires the cell to actively transport ions into the vacuole, which creates an osmotic gradient that draws water in. This process of filling the vacuole, therefore, relies on active transport. The expulsion of the vacuole's contents is then a form of exocytosis.