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In an osmoscope of fresh and peeled pota...

In an osmoscope of fresh and peeled potato, concentrated sugar solution is filled in the cup. It is then placed in a petridish containing water with a few drops of safranin. It shows

A

endosmosis, inner solution becomes pink

B

endosmosis, inner solution does not become pink

C

exosmosis, the cup becomes limp

D

no osmotic phenomenon is observed

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The correct Answer is:
A
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Carry out the following osmosis experiment: Take four peeled potato halves and scoop each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now, (a) Keep cup A empty (b) Put one teaspoon sugar in cup B (c) Put one teaspoon salt in cup C (d) Put one teaspoon sugar in the boiled potato cup D. Keep these for two hours. Then observe the four potato cups and answer the following: Explain why water gathers in the hollowed portion of B and C

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ARIHANT NEET-TRANSPORT IN PLANTS -Chapter exercises A. Taking it together (Assorted Questions of the Chapter for Advanced Level Practice )
  1. Osmosis is defined as the process, in which

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  2. A membrane, which permits the solvent and not the solute to pass throu...

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  3. In an osmoscope of fresh and peeled potato, concentrated sugar solutio...

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  4. osmotic pressure is responsible for the turgidity of plant cells. It p...

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  5. Seeds when soaked in water imbibe it because

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  6. Which of the following is an example of imbibition?

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  7. With rise in turgidity, wall pressure will

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  8. Addition of a solute to pure water causes

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  9. The water potential is

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  10. Water potential measures the tendency of water to

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  11. Mark the correct relationship

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  12. The direction of movement of water from outside into the cell and also...

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  13. Turgor pressure becomes equal to the wall pressure when

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  14. When cut stumps of a plant is fitted with a manometer, the level of me...

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  15. In the given flow chart, the flow of water is shown from soil to xylem...

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  16. Boucherie (1940), rejected to vital force theory on the basis that the

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  17. Root pressure, which plays a small role in xylem flow, is caused by

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  18. Ascent of sap by transpiration pull breaks due to

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  19. According to the transpiration cohesion theory, the upward pull of wat...

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  20. Which contributes most to the transport of water from the soil to the ...

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