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प्रश्न
Mention whether the following statement is true (T) or false (F) and give explanation in support of your answer.
Plasmolysis is reverse of deplasmolysis.
विकल्प
True
False
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उत्तर
True.
Plasmolysis occurs due to outflow of water from the cell when placed in hypertonic solution due to which the cytoplasm shrinks away from the cell wall. On the other hand, deplasmolysis is the result of the re-entry of water into the plasmolysed cell when placed in hypotonic solution due to which the protoplasm again swells up pressing tight against the cell wall.
संबंधित प्रश्न
Mention whether the following statement is true or false. Correct the false statement by altering the last word only.
Addition of salt to pickles prevents growth of bacteria because they turn turgid.
Distinguish between the following:
Turgor pressure and osmotic pressure
Give at least three uses of water to green plants
Give Reasons for the following.
The raisins swell up in the water.
Give Reasons for the following.
Plants begin to die when the excess of soluble fertilizers are added to the soil?
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.
A solution whose concentration is greater than that of the cell sap.
Fill in the Blanks
Osmosis in the diffusion of _______ molecules from the region of higher _____ potential to that of lower potential across a S.P.M.
