What does the vacuole in a plant cell primarily store?

The vacuole in a plant cell primarily stores water and cell sap, which is a mixture of sugars, salts, and other substances. The vacuole plays a crucial role in maintaining cell turgor pressure, which helps keep the cell firm and provides structural support to the plant. When the vacuole is filled with water, it presses against the cell wall, helping the plant maintain its shape and resist wilting. Additionally, the cell sap within the vacuole can serve as a reservoir for nutrients and waste products, contributing to plant metabolism and overall health. This storage function is vital for the plant's ability to thrive in its environment.