what fluid is found inside a plant cell's permanent vacuole?

The fluid found inside a plant cell's permanent vacuole is called cell sap. This fluid is not just water; it is a mixture of water, sugars, salts, amino acids, enzymes, ions, pigments, and waste products. The cell sap plays a crucial role in maintaining the plant cell's turgor pressure, which keeps the cell firm and supports the plant's structure. It also helps in nutrient storage, waste storage, and maintaining cellular pH. The membrane surrounding the vacuole is called the tonoplast, which regulates the flow of substances into and out of the vacuole.