What is the plant cell vacuole? What are the roles of the plant cell vacuole? Solution Plants and fungi show presence of vacuoles. These vacuoles are membrane bound, large in size. Vacuoles present within the plant cells have multi functions. One of the main functions of the vacuoles is the storage of water. That’s why these vacuoles are said to be fluid filled sacs. These vacuoles sometimes are act in lysis. These vacuoles possess metabolites necessary for the basic metabolic functions of the plant. The vacuoles store up pigments. Vacuoles play a role in detoxification of foreign toxic particles. The stiffness of a cell is due to turgor pressure maintained by the cell wall together with vacuoles. If the water present within the vacuoles get lost due to ex-osmosis, the cell loss its turgor pressure. The vacuoles also stores up excess proteins and carbohydrates for future need. thus vacuoles are the intracellular sacs which have been arise due to different roles of a cell such as autolysis, secretion, storage and delivery..