How much do you know about osmosis
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Questions and Answers

What is the difference between permeable and semi-permeable membranes?

  • Permeable membranes allow non-electrolytic crystalloids to pass, while semi-permeable membranes allow only electrolyte crystalloids to pass.
  • Permeable membranes allow crystalloid substances to pass, while semi-permeable membranes allow only electrolyte crystalloids to pass.
  • Permeable membranes allow all molecules to pass from one side to another, while semi-permeable membranes allow only solvent molecules to pass. (correct)
  • Permeable membranes allow only solvent molecules to pass, while semi-permeable membranes allow all molecules to pass.

    • What is the main difference between permeable and semi-permeable membranes?

  • Semi-permeable membranes allow all molecules to pass through.
  • There is no difference between permeable and semi-permeable membranes.
  • Permeable membranes allow all molecules to pass through, while semi-permeable membranes allow only solvent molecules to pass. (correct)
  • Permeable membranes allow only solvent molecules to pass through.

    • What is osmosis?

  • The physical phenomenon of mixing two solutions or miscible gases, with different concentrations, separated by a permeable membrane
  • The physical phenomenon of separating two solutions or miscible gases, with different concentrations, separated by a permeable membrane
  • The physical phenomenon of mixing two solutions or miscible gases, with different concentrations, separated by a semi-permeable membrane (correct)
  • The physical phenomenon of separating two solutions or miscible gases, with different concentrations, separated by a semi-permeable membrane

    • What is osmosis?

    <p>The mixing of two solutions or miscible gases with different concentrations, separated by a semi-permeable membrane</p> Signup and view all the answers

    Which of the following is NOT one of the main laws of osmosis?

    <p>Osmotic pressure being exerted only on non-electrolytic crystalloids.</p> Signup and view all the answers

    Which of the following is true about the laws of osmosis?

    <p>Osmotic pressure is directly proportional to the concentration of the solution and inversely proportional to its volume</p> Signup and view all the answers

    What is plasmolysis?

    <p>The separation of the plasmalemma from the pectocellulosic membrane</p> Signup and view all the answers

    What is plasmolysis?

    <p>The separation of the plasmalemma from the pectocellulosic membrane</p> Signup and view all the answers

    What is the plasmolytic method used for?

    <p>To determine the osmotic pressure of the cell juice</p> Signup and view all the answers

    How can the osmotic pressure of cell juice be determined?

    <p>Through the plasmolytic method</p> Signup and view all the answers

    What is the role of turgor state in herbaceous plants?

    <p>It contributes to the mechanical support of the plant.</p> Signup and view all the answers

    How do plant cells in meristematic tissues or dry seeds lacking vacuoles absorb water?

    <p>Through imbibition.</p> Signup and view all the answers

    How do plant cells in meristematic tissues or dry seeds without vacuoles absorb water?

    <p>Through imbibition.</p> Signup and view all the answers

    What is the role of turgor state in herbaceous plants?

    <p>It contributes to the mechanical support of the plant.</p> Signup and view all the answers

    What is the consequence of drought conditions for plants?

    <p>Death of the plant.</p> Signup and view all the answers

    What is the basis of water absorption and swelling of seeds?

    <p>Imbibition.</p> Signup and view all the answers

    How does water content vary in plants?

    <p>It varies depending on the species, organ, and tissue</p> Signup and view all the answers

    Which of the following is true about water content in plants?

    <p>It varies depending on species, organ, and tissue</p> Signup and view all the answers

    What can drought conditions lead to in plants?

    <p>Death of the plant.</p> Signup and view all the answers

    Study Notes

    • Diffusion is the interpenetration of molecules of two gases or liquids of different concentrations.
    • Permeable membranes allow all molecules to pass from one side to another, while semi-permeable membranes allow only solvent molecules to pass.
    • Osmosis is the physical phenomenon of mixing two solutions or miscible gases, with different concentrations, separated by a semipermeable membrane.
    • The main laws of osmosis include osmotic pressure being exerted only on crystalloid substances, electrolyte crystalloids having a higher osmotic pressure than non-electrolytic crystalloids, and osmotic pressure being directly proportional to the concentration of the solution and inversely proportional to its volume.
    • The plasma membranes of the cell (plasmalemma and tonoplast) show relative and selective semi-permeability.
    • The turgor state of cells contributes to the mechanical support of herbaceous plants.
    • Plasmolysis is the separation of the plasmalemma from the pectocellulosic membrane and can be used as an indication of cell viability.
    • The plasmolytic method can be used to determine the osmotic pressure of the cell juice.
    • Plant cells in meristematic tissues that have very small vacuoles or those in dry seeds that lack vacuoles are supplied with water through the imbibition phenomenon.
    • Imbibition is the physical phenomenon of water penetration into the colloidal gels of the cell.
    1. Imbibition is the basis of water absorption and swelling of seeds.
    2. Leguminous seeds have the highest imbibition capacity.
    3. Mature cells absorb water by osmosis.
    4. Land plants cannot reach maximum turgor due to transpiration.
    5. The suction force of a cell depends on its degree of water saturation.
    6. Plants absorb water and mineral substances from the soil.
    7. Water regime is important for normal turgor in cells.
    8. Drought conditions can lead to death of plants.
    9. Water content varies depending on species, organ, and tissue.
    10. Water content in plants varies with climatic factors and seasons.

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    Description

    Test your knowledge on the fascinating world of diffusion, osmosis, and imbibition with this informative quiz. From understanding the differences between permeable and semi-permeable membranes to the laws of osmosis and the importance of water content in plants, this quiz covers it all. Sharpen your understanding of these fundamental concepts and discover how they impact everything from the mechanical support of plants to the absorption and swelling of seeds. Don't miss out on this opportunity to expand your knowledge on the intriguing

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