Understanding Tonoplast and Its Role in Plant Cells

The video explains the role of the tonoplast in plant cells. It describes how the tonoplast, a membrane surrounding the vacuole, is filled with cell sap, a solution of various substances in water. This solution causes water to move into the cell by osmosis, pressing the cytoplasm against the cell wall, which helps maintain cell structure and keeps the plant upright.

What is the tonoplast?

• A solution inside the cell

• A type of plant tissue

• A membrane surrounding the vacuole

• A type of plant cell

What is contained within the tonoplast?

• Air

• A solution of various substances in water

• Solid nutrients

• Chlorophyll

How does the solution inside the tonoplast affect water movement?

• It prevents water from entering the cell

• It causes water to move out of the cell

• It causes water to move into the cell by osmosis

• It has no effect on water movement

What is the result of the cytoplasm being pressed against the cell wall?

• The plant wilts

• The cell becomes rigid and the plant stands upright

• The cell becomes flexible

• The cell wall breaks

What role does osmosis play in plant structure?

• It causes the plant to lose water

• It helps maintain the plant's upright position

• It reduces the size of the vacuole

• It dissolves the cell wall