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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
Osmosis and diffusion are the same except that osmosis there is:
The most appropriate characteristic of a semipermeable membrane is that
Give the equivalent terms for the following:
Pressure of the cell contents on the cell wall
Give reason for the following:
Potato cubes, when placed in water, become firm and increase in size.
Show by a series of diagrams, the change which a plant cell will undergo when placed in
Hypotonic salt solution
Define the following:
Osmosis
Define the following:
Diffusion
Choose the correct answer:
Cell turgidity is caused by _______________
Choose the correct answer:
If a marine plant is transferred to fresh water, it bursts due to ___________
Give at least three uses of water to green plants
Give Reasons for the following.
Freshwater fish cannot survive in seawater.
Differentiate between the following
Endosmosis and Exosmosis
The apparatus arranged here signifies an important process.
(i) Name the process.
(ii) Where does this process occur in plants?
(iii) What solution is placed inside the dialysis tubing?
(iv) What happens to the level of the solution in the capillary tube?
(v) Define the process mentioned in Q. (i) above.
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.
Name the following:
Condition of cell in which the cell content are shrunken.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The plasma membrane permits the passage of all solutes and water.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Plasmolysis makes the cell turgid.
Multiple Choice Question:
When a plant wilts, the sequence of events will be as follows:
The given statement is incorrect. Rewrite the correct statement:
Fresh water fish when placed in hypertonic salt solution absorb water and burst.
