In plant cells, where is the water primarily found when in a hypotonic solution?

In plant cells, when in a hypotonic solution, water primarily accumulates in the central vacuole. The central vacuole is a large, membrane-bound organelle that plays a crucial role in maintaining turgor pressure within the cell. In a hypotonic environment, where the concentration of solutes outside the cell is lower than that inside, water enters the cell through osmosis. This influx of water is stored in the central vacuole, allowing the plant cell to maintain its structure and rigidity.

The central vacuole also serves other functions, including storage of nutrients and waste products, and it helps in the regulation of the cell's internal environment. Therefore, its ability to hold large amounts of water is vital for the plant's overall health and stability, particularly in hypotonic conditions. When water fills the central vacuole, it exerts pressure against the cell wall, reinforcing the plant's shape and preventing wilting.