Advertisements
Advertisements
प्रश्न
Give reason for the following:
Potato cubes, when placed in water, become firm and increase in size.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
A plant cell placed in a certain solution got plasmolysed. What was the kind of solution?
Show by a series of diagrams, the change which a plant cell will undergo when placed in
Hypertonic salt solution
Name the following:
The pressure with which the molecules of a substance diffuse.
Give Reasons for the following.
Freshwater fish cannot survive in seawater.
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?
Name the following:
Name the process by which water enters the root hair cell.
Multiple Choice Question:
Plasma membrane controls:
Explain the term:
Plasmolysis
Define the following term:
Tonicity
