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प्रश्न
Distinguish between the following:
Hypotonic and Hypertonic solutions
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उत्तर
| Hypotonic solutions | Hypertonic solutions | |
| (i) | In this condition, the solution outside the cell has a lower solute concentration than the cell sap. | In this condition, the solution outside the cell has a higher solute concentration than the cells sap. |
| (ii) | The water molecules from outside will move into the cell (endosmosis). | The water molecules from the interior of the cell will move out (exosmosis) under excessive root pressure. |
| (iii) | It is a weak solution and strong solvent. | It is a strong solution with a weak solvent. |
संबंधित प्रश्न
Differentiate between Turgor pressure and Wall pressure (explain)
The space between the cell wall and plasma membrane in a plasmolysed cell is filled with ______.
Mention whether the following statement is true or false. Correct the false statement by altering the last word only.
The shrinkage of protoplasm, when a cell is kept in hypotonic solution.
Leaves of the sensitive plant wilt and droop down on a slight touch. What mechanism brings about this change?
Show by a series of diagrams, the change which a plant cell will undergo when placed in
Hypertonic salt solution
Define the term:
Plasmolysis
Name the following:
The pressure with which the molecules of a substance diffuse.
Name the following:
Two solutions having same concentrations.
Choose the correct answer:
Grapes when placed in a strong sugar solution shrink because of __________
Define the Cohesive and Adhesive forces.
Give Reasons for the following.
It is necessary to maintain a normal osmotic concentration of the blood.
Give Reasons for the following.
Freshwater fish cannot survive in seawater.
Differentiate between:
Osmosis and Diffusion
A plant cell kept in a drop of water was examined under the low power magnification of a microscope, as shown:
(i) What would you do to bring this cell back to its original condition?
(ii) What scientific term is used for such condition?
(iii) Draw the same cell if it is kept in a strong sugar solution.
The diagram below represents an experimental set up to demonstrate a vital process. Study the same and then answer the questions that follow:
(i) Name the process.
(ii) Define the above named process.
(iii) What would you observe in the experimental setup after an hour or so?
(iv) What control experiment can be set up for the above experiment?
(v) Keeping in mind the root hair cell and its surrounding name the part that corresponds to (1) Concentrated sugar solution, (2) Parchment paper, (3) Water in the beaker.
(vi) Name any other substance that can be used instead of parchment paper in the above experiment.
(vii) Mention two advantages of this process to the plant.
Give Technical Term for the following.
The pressure which is responsible for the movement of water molecules across the cortical cells of the root.
Multiple Choice Question:
In the process of osmosis in a cell:
