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प्रश्न
Differentiate between the following
Permeable and Semi-permeable membrane.
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उत्तर
| Permeable Membrane | Semi-permeable Membrane |
| A permeable membrane has pores which allow free movement of solute as well as solvent molecules. | A semi-permeable membrane has pores which allow only solvent molecules to pass through them. |
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संबंधित प्रश्न
How does movement and absorption of water take place through the roots?
Mention whether the following statement is true or false. Correct the false statement by altering the last word only.
The cell wall of the root cell is a differentially permeable membrane.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Xylem is the water-conducting tissue in plants.
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the term in Column ‘II’ with a suitable idea given in Column ‘I’.
| Column I | Column II |
| (i) Diffusion | (a) The exit or flow of water from the cell to the outer environment. |
| (ii) Xylem | (b) The shrinkage of protoplasm when the cell is kept in a hypertonic solution. |
| (iii) Root pressure | (c) The tissue through which water and mineral salts move upward in a plant. |
| (iv) Isotonic solution | (d) Two solutions which have equal osmotic pressure. |
| (v) Exosmosis | (e) The process by which the molecules of perfume spread in the room when the bottle is open. |
| (vi) Osmosis | (f) The process by which roots absorb water from the soil. |
| (vii) Plasmolysis | (g) The pressure by which water rises up to some feet in a lofty tree. |
| (viii) Hypotonic solution | (h) The concentration of the solution when lower than that of the cell sap. |
Multiple Choice Question:
Water will be absorbed by the root hairs when:
Describe structure of root hair.
Root hair is ________ extension of epiblema cells.
How many regions are there in a typical root?
They are pipe-like, consisting of a group of specialised cells. They transport substances and form two-way traffic in plants. Which of the following terms qualify for the features mentioned above?
Water in the root enters due to ______.
