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प्रश्न
Explain why:
Bacteria and fungi do not grow in pickles, jams, jellies and squashes.
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उत्तर
Jam, jellies and pickles are kept in hypertonic solution of sugar or salt in which plasmolysis of bacteria and fungi takes place. This kills the bacteria and fungi and hence, pickles, jam and jellies are preserved properly.
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संबंधित प्रश्न
Differentiate between the following pairs on the basis of what is indicated in the brackets.
Hypotonic solution and Hypertonic solution [condition of a plant cell when placed in them]
A plant cell placed in a certain solution got plasmolysed. What was the kind of solution?
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.
Define the term:
Plasmolysis
Distinguish between the following:
Filtration and diffusion
Choose the correct answer:
If a marine plant is transferred to fresh water, it bursts due to ___________
What do you mean by transpiration pull ?
Give Reasons for the following.
Salt and sugar are used in preserving food.
Differentiate between the following
Endosmosis and Exosmosis
Explain the Term: Exosmosis
