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Which of the following is true/false reg...

Which of the following is true/false regarding transport of substances in plants ?
(i) Mass flow is the movement of substances in bulk as a result of pressure difference
(ii) Bulk flow is achieved only through a positive hydrostatic pressure gradient
(iii) The apoplast system is the system of interconnected protoplasts
(iv) Most of the water flow in the roots occurs via the apoplast since the cortical cells are loosely packed, and offer no resistance to water movement.

A

Water

B

Food

C

Minerals

D

All of these

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The correct Answer is:
D
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AAKASH INSTITUTE ENGLISH-TRANSPORT IN PLANTS -Exercise
  1. Which of the following substance acts as best imbibant ?

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  2. List two conditions necessary for the imbibition to take place.

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  3. Which of the following is true/false regarding transport of substances...

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  4. Symplast pathway of water in plants is not related to

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  5. Most of the flows in the roots as

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  6. During passive absorption, water is absorbed as a result of tension cr...

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  7. During active absorption of water

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  8. All given factors promote absorption of water by roots , except

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  9. Positive hydrostatic pressure developing in root xylem due to active s...

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  10. According to Dixon and Jolly's Cohesion Theory the channel for ascent...

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  11. Select an incorrect statement

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  12. Force responsible for the ascent of sap is

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  13. Which of the following contributes about 1% of the total transpiration...

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  14. Select an incorrect statement

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  15. Which one of the following does not cause opening of stomata?

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  16. Select a correct statement

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  17. Given below is the diagram of a stomatal apparatus. In which of the fo...

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  18. An aqueous pink solution of cobalt (II) chloride changes to deep blue ...

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  19. What are the control points in plants where quantity and type of solut...

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  20. The chief sinks for the minerals elements are the ------------ regions...

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