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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.
विकल्प
True
False
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उत्तर
This statement is false.
Correct statement: Addition of salt to pickles prevents growth of bacteria because they turn flaccid.
Explanation:
Addition of salt to pickles increases the concentration and when bacterias come in contact, it undergoes exosmosis and thus becomes flaccid or plasmolysed leading to its death.
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संबंधित प्रश्न
The most appropriate characteristic of a semipermeable membrane is that
Complete the following statements:
Hypotonic solution is one in which the solution kept outside the cell has lower solute concentration than ……………… the cell.
Show by a series of diagrams, the change which a plant cell will undergo when placed in
Hypotonic salt solution
Define the following:
Osmosis
Mention whether the following statement is true (T) or false (F) and give explanation in support of your answer.
Plasmolysis is reverse of deplasmolysis.
The diagram given below is of an experiment just at the start. Study the diagram carefully and answer the following questions :
(i) What does the experiment demonstrate?
(ii) Define, the process demonstrated in the experiment.
(iii) What changes are observed after a few hours?
(iv) Give two examples of a semi-permeable membrane.
(v) Which limb of the U-tube contains a more concentrated sucrose solution, A or B?
(vi) Why is the membrane separating the two solutions labeled as semi-permeable membrane?
Give Technical Term for the following.
A solution whose concentration is greater than that of the cell sap.
Fill in the Blank
The pressure which develops in the cortical cells of root which force a part of the water upward ____________.
Explain the Term: Endosmosis
Define the following term:
Osmotic Pressure
