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Which fraction of soil water is availabl...

Which fraction of soil water is available to plants for absorption by roots ?

A

Gravtiational water

B

Capillary water

C

Hygroscopic water

D

Combined water

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The correct Answer is:
B
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DINESH PUBLICATION ENGLISH-TRANSPORT IN PLANTS-REVISION QUESTIONS FROM COMPETITIVE EXAMS
  1. Root pressure is maximum when

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  2. Path of water movement from soil to exarch xylem is

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  3. Which fraction of soil water is available to plants for absorption by ...

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  4. Rate of water absorption can be increased through (a) Decreased trans...

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  5. Water in plants is transported by or ascent of sap take place through

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  6. The most widely accepted theory of ascent of sap in trees is

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  7. Water rises in the stem due to

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  8. According to one vital force theory, ascent of sap is due to active pu...

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

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  10. Upward movement of water through xylem is best explained by (a) Cohes...

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  11. The principal pathway of water translocation in angiosperms is

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  12. The cohesive force bof water is due to

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  13. When pheloem is removed by girdling

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  14. During osmosis, flow of water through a semipermeable membrane is

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  15. Diffusion of water through selectively permeable membrane is

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

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

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

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  19. During water absorption by roots , water potential of cell sap is lowe...

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  20. Comment upon the following : When a plant cell is kept in hypertonic...

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