Vacuoles are fluid filled single membrane bounded organelles.
Numbers:- cells have many small vacuoles in their cytoplasm, however when a plant cell matures its small vacuoles fuses to form a large single vacuole in centre.
Types of vacuoles:- The following are main types of vacuoles.
- Central Vacuole:- This type of vacuole is present in plant cell and is responsible mostly for storage of water.
- Contractile Vacuole;- This type of vacuoles are moveable and are present in unicellular organisms. Contractile vacuole eliminate waste from the cell.
- Food vacuoles:- Food vacuole take in materials in the form of food from outside and also store them.