Water Potential Quiz

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Questions and Answers

What is the technical definition of water potential 'Ψ'?

  • The difference between the chemical potential of water in the system and the chemical potential of pure water under standard temp. and pressure (correct)
  • The measure of the concentration of solutes in a solution
  • The pressure exerted by water in a system
  • The tendency of water molecules to move from a region of high kinetic energy to a region of low kinetic energy

What is the solute potential 'Ψs' in a solution?

  • The measure of the concentration of water molecules in the solution
  • The change in the Ψ value due to the contribution of dissolved solutes (correct)
  • The tendency of solute molecules to move from a region of low concentration to a region of high concentration
  • The pressure exerted by the dissolved solutes in the solution

What happens to the water potential 'Ψ' when solutes are added to pure water?

  • The Ψ value will remain unchanged
  • The Ψ value will drop and become negative (correct)
  • The Ψ value will increase proportionally to the amount of solutes added
  • The Ψ value will become zero

In a solution, when does Ψ equal Ψs?

<p>When the pressure potential Ψp is 0 (C)</p> Signup and view all the answers

What happens to the water potential 'Ψ' when a plant cell is placed into pure water?

<p>Water moves from high Ψ outside to lower Ψ inside the cell (C)</p> Signup and view all the answers

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