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Which of the following is not correct in...

Which of the following is not correct in mass flow hypothesis ?

A

As hydrostatic pressure in the phloem sieve tube increases pressure flow stops and sap is accumulated in phloem.

B

The sugar is moved bidirectionally.

C

The sugar which is transported is sucrose.

D

Loading of the phloem sets up a water potential gradient that facilitates the mass movement in the phloem.

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The correct Answer is:
A
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MODERN PUBLICATION-TRANSPORT IN PLANTS-COMPETITION FILE (MULTIPLE CHOICE QUESTIONS)
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  2. Water potential gradient between the absorbent and the liquid imbibed ...

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  3. Which of the following is not correct in mass flow hypothesis ?

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  4. Water vapour comes out from the plant leaf through the stomatal openin...

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  5. Specialised epidermal cells surrounding the guard cells are called

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  6. A few drops of sap were collected by cutting across a plant stem by a ...

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  7. The water potential of pure water is

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  8. Root hairs develop from the region of

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  9. Which of the following facilitates opening of stomatal aperture?

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  10. Stomata in grass leaf are

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  11. If the concentration of external solution is more than the cytoplasm, ...

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  12. Water is released as droplet this is known as :

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  13. Stomata of a plant open due to

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  14. Plasmodemata connections help in

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  15. Dumb-bell shaped guard cells are found in

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  16. Wilting in plants occurs when

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  17. A plant cell attains turgidity due to

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  18. Which one of the following theriores for ascent of sap was proposed b...

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  19. When a fresh-water protozoan possessing a contractile vacuole, is plac...

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  20. water reaches the top of a plant due to

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