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प्रश्न
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.
विकल्प
True
False
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उत्तर
This statement is false.
Correct statement: The shrinkage of protoplasm, when a cell is kept in hypertonic solution.
Explanation:
The protoplasm of a cell shrinks due to the exosmosis of water, which occurs in hypertonic solutions, whereas a cell kept in hypotonic solutions swells up due to the endosmosis of water.
संबंधित प्रश्न
Give appropriate biological or technical terms for the following :
Movement of molecules of a substance from their higher concentration to lower concentration when they are in direct contact.
A plant cell placed in a certain solution got plasmolysed. What was the kind of solution?
The most appropriate characteristic of a semipermeable membrane is that
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.
Explain how soaked seeds swell up and burst their seed coats.
Give Reasons for the following.
Salt and sugar are used in preserving food.
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.
Fill in the Blank
A plasmolysed cell has __________ protoplast.
Explain the term:
Plasmolysis
