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प्रश्न
Give Reasons for the following.
Salt and sugar are used in preserving food.
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उत्तर
Salt and sugar increase the concentration of food, destroying bacteria by plasmolysis.
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संबंधित प्रश्न
Differentiate between Diffusion and Osmosis (Definition)
Differentiate between Turgor pressure and Wall pressure (explain)
Complete the following statements:
Hypotonic solution is one in which the solution kept outside the cell has lower solute concentration than ……………… the cell.
The bending movements of certain flowers towards the sun and the sleep movements of certain plants at night are examples of ______.
Name the following:
The inward movement of solvent molecules through the plasma membrane of the cell.
Given below is the figure of an experimental set up to demonstrate root pressure.
(i) Define root pressure.
(ii) What change would you observe in the water level after some time?
(iii) What role is being played by the root pressure in the given experiment?
(iv) Why the oil has been sprinkled on water?
Name the following:
The pressure through which water can rise upto some feet.
Fill in the Blanks
Diffusion is the movement of molecules from a region of their ________ concentration to the region of their ________ concentration.
When a cell in solution shrinks and loses its shape, then the solution is ______.
