The function of the vacuole is

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(A) Vacuoles are membrane-bound spaces found in the cytoplasm. They contain water, sap, excretory products, and other materials not useful for the cel

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(A) Vacuoles are membrane-bound spaces found in the cytoplasm. They contain water, sap, excretory products, and other materials not useful for the cell.In many plant cells, the vacuole can occupy up to $90\%$ of the volume of the cell.The membrane surrounding the vacuole is called the tonoplast.The tonoplast facilitates the transport of a number of ions and other materials against concentration gradients into the vacuole, thereby maintaining a higher concentration in the vacuole than in the cytoplasm.Thus, vacuoles play a significant role in the storage of waste products and their subsequent removal from the cell, which is a form of excretion.

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