* Cell Walls: Plant cells have rigid cell walls made of cellulose. These walls provide structural support and help maintain the cell's shape.

* Large Central Vacuole: Plant cells have a large central vacuole that can fill with water.

* Osmosis: When the concentration of water outside the cell is higher than inside, water moves into the cell via osmosis. This causes the vacuole to swell and push against the cell wall.

Turgidity is the state of being firm or swollen due to internal fluid pressure. When a plant cell is turgid, the pressure from the vacuole pushes against the cell wall, making the cell rigid and firm. This is important for:

* Plant Structure: Turgidity helps maintain the shape and uprightness of plant stems and leaves.

* Photosynthesis: Turgidity ensures that leaves are spread out to maximize sunlight exposure for photosynthesis.

* Transport: Turgidity helps facilitate the movement of nutrients and water throughout the plant.

Other cells that can be turgid (to a lesser extent):

* Fungal cells also have cell walls and can exhibit turgidity, although they lack a large central vacuole.

* Bacteria have cell walls, but their turgidity is influenced by different mechanisms compared to plant cells.

It's important to note that animal cells do not have cell walls and therefore cannot be turgid. They rely on other mechanisms for structural support and maintaining cell shape.