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प्रश्न
Give reason for the following:
Potato cubes, when placed in water, become firm and increase in size.
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उत्तर
Potato cubes contain an excess of salts and sugars as compared to the water in which they are placed. Hence, due to endosmosis, water from the surrounding area enters the potato cubes, making them firm and increasing their size.
संबंधित प्रश्न
The bending movements of certain flowers towards the sun and the sleep movements of certain plants at night are examples of ______.
Distinguish between the following:
Filtration and diffusion
Explain why:
Bacteria and fungi do not grow in pickles, jams, jellies and squashes.
What is the significance of diffusion?
Give Reasons for the following.
We gargle with saline water in case of throat infection.
Give Reasons for the following.
Plants begin to die when the excess of soluble fertilizers are added to the soil?
Give Technical Term for the following.
A solution whose concentration is equal to the cell sap.
Fill in the Blank
When there is no movement of water in the cell from the outside medium, the medium is considered to be ______ to cell sap.
Fill in the Blank
A plasmolysed cell has __________ protoplast.
Explain the term:
Plasmolysis
