Plant Water Relations Quiz
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Questions and Answers

What is the purpose of understanding plant water relations?

  • To understand the water requirements of different plants (correct)
  • To study the water potential of pure water
  • To study the dissolution of substances in plants
  • To measure the kinetic energy of water molecules
  • What is the relationship between the concentration of water in a system and its water potential?

  • The greater the concentration of water, the higher the water potential (correct)
  • The concentration of water has no effect on water potential
  • Water potential is independent of the concentration of water
  • The greater the concentration of water, the lower the water potential
  • What happens when a solute is added to pure water?

  • The water potential becomes zero
  • The water potential decreases (correct)
  • The water potential increases
  • The water potential remains the same
  • What is the value of water potential of pure water at standard temperature?

    <p>Zero</p> Signup and view all the answers

    What happens when water enters a plant cell by diffusion and exerts a pressure on the walls of the cell?

    <p>The cell becomes turgid</p> Signup and view all the answers

    What is the relationship between water potential, solute potential, and pressure potential?

    <p>Water potential is equal to the sum of solute potential and pressure potential</p> Signup and view all the answers

    What is osmosis?

    <p>The movement of water across a semi-permeable membrane from a region of higher concentration to a region of lower concentration</p> Signup and view all the answers

    What is endosmosis?

    <p>The inward diffusion of water through a semipermeable membrane when the surrounding solution is less concentrated</p> Signup and view all the answers

    What is exosmosis?

    <p>The outward diffusion of water through a semipermeable membrane when the surrounding solution is more concentrated</p> Signup and view all the answers

    What is plasmolysis?

    <p>The process of water moving out of a cell and the cell membrane shrinking away from the cell wall</p> Signup and view all the answers

    What happens when a cell is placed in an isotonic solution?

    <p>No net movement of water occurs</p> Signup and view all the answers

    What is turgor pressure?

    <p>The pressure exerted on a cell wall due to water moving into the cell</p> Signup and view all the answers

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