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Upward movement of water through xylem i...

Upward movement of water through xylem is best explained by

A

Cohesion theory

B

Pulsation theory

C

Capillarity theory

D

Root pressure theory

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The correct Answer is:
A
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DINESH PUBLICATION-TRANSPORT IN PLANTS-REVISION QUESTIONS FROM COMPETITIVE EXAMS
  1. According to one vital force theory, ascent of sap is due to acitve pu...

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  2. At what time, the stomatal transpiration is completely stopped

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  3. Upward movement of water through xylem is best explained by

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  4. The principal pathway of water translocation in angiosperms is

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  5. Cohesive force of water is due to

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  6. Ringing/girdling experiment was first performed by

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  7. During osmosis, water passes through a semipermeable membrane

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  8. Diffusion of water through selectively permeable membrane is

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  9. A higher plant cell covered with cutin and suberin is placed in water....

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  10. Water is absorbed from outside solution only when it is

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  11. Supply of excess fertilizer and watering of a grass lawn causes brown...

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  12. During absorption of water by roots , the water potential of cell sap ...

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  13. Plant cells kept in hypertonic solution will get

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  14. 0.1 M solution of a solute has a water potential of

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  15. The movement of free atoms from higher concentration to lower concentr...

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  16. In seed germination the first to occur is

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  17. Plosmolysis is due to

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  18. Mango dipped in concentration NaCl solution will

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  19. Cotton fibres dipped in water absorb water through

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  20. A cell placed in a solution get deplasmolyed . The solution is

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