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प्रश्न
Give Reasons for the following.
It is necessary to maintain a normal osmotic concentration of the blood.
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उत्तर
Osmotic pressure is maintained in blood to prevent dehydration leading to shrinkage of cells.
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संबंधित प्रश्न
Osmosis and diffusion are the same except that osmosis there is:
Give the equivalent terms for the following:
Pressure of the cell contents on the cell wall
Give reason for the following:
Potato cubes, when placed in water, become firm and increase in size.
Define the following:
Osmosis
Define the term:
Plasmolysis
Name the following:
The pressure with which the molecules of a substance diffuse.
Choose the correct answer:
Osmosis involves diffusion of ___________
The diagram below represents an experimental set up to demonstrate a vital process. Study the same and then answer the questions that follow:
(i) Name the process.
(ii) Define the above named process.
(iii) What would you observe in the experimental setup after an hour or so?
(iv) What control experiment can be set up for the above experiment?
(v) Keeping in mind the root hair cell and its surrounding name the part that corresponds to (1) Concentrated sugar solution, (2) Parchment paper, (3) Water in the beaker.
(vi) Name any other substance that can be used instead of parchment paper in the above experiment.
(vii) Mention two advantages of this process to the plant.
Give Technical Term for the following.
A solution whose concentration is greater than that of the cell sap.
Fill in the Blank
A plasmolysed cell has __________ protoplast.
