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प्रश्न
Give at least three uses of water to green plants
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उत्तर
(i) Water is major component of protoplasm.
(ii) It is an important raw material for photosynthesis.
(iii) Most metabolic and enzymatic reactions take place in the presence of water.
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संबंधित प्रश्न
Name the following:
The condition of a cell placed in a hypotonic solution.
Give the equivalent terms for the following:
Pressure of the cell contents on the cell wall
Complete the following statements:
Hypotonic solution is one in which the solution kept outside the cell has lower solute concentration than ……………… the cell.
Name the following:
The process by which raisins swell up when placed in a beaker of water.
Choose the correct answer:
Grapes when placed in a strong sugar solution shrink because of __________
What is the significance of diffusion?
In the figure below ‘A’ shows a cell in the normal state and ‘B’ shows the same cell after leaving it in a certain solution for a few minutes.
(i) Describe the change which has occurred in the cell as seen in B.
(ii) Give the technical term for the condition of the cell as reached in B and as it was in A.
(iii) Define the process which led to this condition.
(iv) What was the solution-isotonic, hypotonic or hypertonic, in which the cell was kept?
(v) How can the cell in B, be brought back to its original condition?
(vi) Name the parts numbered 1 to 3.
The apparatus arranged here signifies an important process.
(i) Name the process.
(ii) Where does this process occur in plants?
(iii) What solution is placed inside the dialysis tubing?
(iv) What happens to the level of the solution in the capillary tube?
(v) Define the process mentioned in Q. (i) above.
Give Technical Term for the following.
A solution whose concentration is equal to the cell sap.
Multiple Choice Question:
Plasma membrane controls:
