Water Uptake and Response to Water Stress in Plants
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Questions and Answers

Which of the following is an example of water potential component?

  • Plasmolysis
  • Solute potential
  • Turgor pressure
  • Pressure potential (correct)
  • Pure water has a higher water potential than which solution?

  • 0.1 M sucrose solution (correct)
  • 0.001 M sucrose solution
  • 0.01 M sucrose solution
  • 0.0001 M sucrose solution
  • Which solution has a lower water potential?

  • Pure water
  • 0.001 M sucrose solution
  • 0.1 M sucrose solution (correct)
  • 0.01 M sucrose solution
  • In which direction does water move between two solutions with different water potentials?

    <p>From hypotonic to hypertonic solution</p> Signup and view all the answers

    Under what conditions would soil solution move into the root cells?

    <p>When the soil solution has more solutes</p> Signup and view all the answers

    Which solution is hypotonic in relation to the other solution?

    <p>Solution A</p> Signup and view all the answers

    What is the principle that determines the direction of water flow?

    <p>Water moves from high water potential to lower water potential</p> Signup and view all the answers

    Which principle is being applied in the study of water uptake along a pumpkin root?

    <p>Principle of water movement</p> Signup and view all the answers

    What is the purpose of the study on the tissue organization in roots?

    <p>To understand the pathways for water uptake by roots</p> Signup and view all the answers

    How can water cross plant membranes?

    <p>By diffusion</p> Signup and view all the answers

    What is the main factor contributing to potential water stress in plants?

    <p>Soil water deficit</p> Signup and view all the answers

    What is the response of young cotton plants to water stress?

    <p>Increased abscission</p> Signup and view all the answers

    What is the effect of water stress on photosynthesis and leaf expansion in sunflower?

    <p>Decreased photosynthesis</p> Signup and view all the answers

    Which plant hormone is compared in the growth study of normal vs. ABA-deficient maize plants?

    <p>Abscisic acid</p> Signup and view all the answers

    Under what conditions is the water potential of plants measured?

    <p>Under various growing conditions</p> Signup and view all the answers

    Which of the following is a pathway for water uptake by the root?

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

    Which factor contributes to potential water stress in plants?

    <p>Soil water deficit</p> Signup and view all the answers

    What is the purpose of studying the tissue organization in roots?

    <p>To understand water movement</p> Signup and view all the answers

    What is the response of young cotton plants to water stress?

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

    What is the effect of water stress on photosynthesis and leaf expansion in sunflower?

    <p>Decreased photosynthesis and leaf expansion</p> Signup and view all the answers

    What is the main factor that determines the direction of water flow?

    <p>Water potential</p> Signup and view all the answers

    Which plant hormone is compared in the growth study of normal vs. ABA-deficient maize plants?

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

    Which solution has a lower water potential?

    <p>Soil water deficit</p> Signup and view all the answers

    Which component of water potential is responsible for the turgor pressure in a turgid cell without sign of plasmolysis?

    <p>Pressure potential</p> Signup and view all the answers

    Which solution has a higher water potential when compared to a 0.1 M sucrose solution?

    <p>Pure water</p> Signup and view all the answers

    Which solution would be considered hypotonic in relation to the other solution when separated by a membrane?

    <p>Solution A with more water and less solutes</p> Signup and view all the answers

    Which solution has a lower water potential when compared to the other solution when separated by a membrane?

    <p>Solution B with less free water and more solutes</p> Signup and view all the answers

    Which direction does water move between two solutions with different water potentials?

    <p>From hypotonic to hypertonic solution</p> Signup and view all the answers

    Under what conditions would soil solution move into the root cells?

    <p>When the soil solution has more solutes</p> Signup and view all the answers

    What is the principle that determines the direction of water flow?

    <p>Water potential gradient</p> Signup and view all the answers

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