Water Potential Worksheet
A Grade 9 science worksheet exploring the concept of water potential, osmosis, and its effects on plant and animal cells.
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Water Potential Worksheet
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Read each question carefully and answer to the best of your ability. Show all your work where applicable.
1. Which of the following best defines water potential?
The kinetic energy of water molecules.
The potential energy of water molecules per unit volume relative to pure water.
The movement of water across a semipermeable membrane.
The concentration of solutes in a solution.
2. If a plant cell is placed in a hypertonic solution, what will happen to the cell?
It will swell and burst.
It will remain unchanged.
It will become turgid.
It will lose water and plasmolyze.
3. Water potential is influenced by two main factors: solute potential and .
4. The movement of water from an area of high water potential to an area of low water potential across a selectively permeable membrane is called .
5. Explain how the cell wall in plant cells prevents them from bursting when placed in a hypotonic solution.
6. Describe the role of osmosis in the absorption of water by plant roots.
7. Pure water has the lowest water potential.
True
False
8. Animal cells have cell walls that prevent them from undergoing lysis in hypotonic solutions.
True
False
9. Examine the diagram of the plant cell below. In which direction would water move if this cell was placed in a solution with a higher solute concentration than its cytoplasm?
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