How does a plant cell control its internal (turgor) pressure?

Turgor pressure makes a pressure on plasma membrane against the cell wall. The central vacuole in a plant cell is responsible for turgor pressure. When the vacuole loses water the cytoplasm "shrinks". The cell wall surrounds cell membrane of some cell types. If there were no cell wall around the cell, when cytoplasm gains the water, the cytoplasm will swell until plasma membrane burst.