What is the vacuole in a sperm cell?
A vacuole is a small space within a cell. It typically contains fluid and is enclosed by a cell membrane.
The central vacuole regulates the "tugor pressure" within the cell of the plant; this is responsible (together with the cell wall) for maintaining the shape and structure of many plants (mainly herbaceous). If the vacuole were removed, punctured or absent there would be no rigidity to the cell. The central vacuole is also assists with osmosis and homeostasis within the cell, damage to the vacuole will result in the cell dying.