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प्रश्न
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.
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उत्तर
(i) Osmosis.
(ii) Transfer of water or solvent molecules from a solution of lower concentration to a solution of higher concentration through a semi-permeable membrane is called osmosis.
(iii) The level of sugar solution rises in the stem of thistle funnel, whereas the water level in the beaker falls.
(iv) A non-permeable membrane can be used in place of parchment paper for a control experiment.
(v) (1) Root hair cell sap corresponds to concentrated sugar solution.
(2) Cell membrane of root hair cell corresponds to parchment paper.
(3) Soil solution corresponds to water in the beaker.
(vi) Goat’s bladder or pig’s bladder.
(vii) (1) Helps in water absorption.
(2) Helps in stomatal opening and closing thus facilitating gaseous exchange.
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संबंधित प्रश्न
The bending movements of certain flowers towards the sun and the sleep movements of certain plants at night are examples of ______.
Name the following:
Two solutions having same concentrations.
Name the following:
Movement of molecules from a region of high concentration to a region of low concentration.
Choose the correct answer:
If a marine plant is transferred to fresh water, it bursts due to ___________
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.
Multiple Choice Question:
Osmosis involves:
Multiple Choice Question:
Plasma membrane controls:
The given statement is incorrect. Rewrite the correct statement:
Fresh water fish when placed in hypertonic salt solution absorb water and burst.
When a cell in solution shrinks and loses its shape, then the solution is ______.
Define the following term:
Osmotic Pressure
