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Root pressure is caused by:...

Root pressure is caused by:

A

Active absorption/transport

B

passive absorption/transport

C

Indcreased transpiration

D

Increased photoxynthesis

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The correct Answer is:
A
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[A]: Root pressure is largely responsible for ascent of sap in harbaceous plants. [R]: Root pressure develops due to DPD & is maintained by the living cells.

DINESH PUBLICATION ENGLISH-TRANSPORT IN PLANTS-REVISION QUESTIONS FROM COMPETITIVE EXAMS
  1. Phytohormone connected with closing of stomata is

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  2. A twig kept in water having some salt remains fresh for longer period ...

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  3. Root pressure is caused by:

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  4. The movement of water from one cell of the cortex to the adjacent one ...

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  5. Exudation of xylem sap on cutting of a shoot is due to

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  6. Water entering the root due to diffusion is part of

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  7. Water absorbed by root in order to meet the requirement of transpirati...

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  8. The root hairs absorb from soil

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  9. Prolonged water-logging kills plant due to

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  10. Rate of water absorption is slow near freezing point because

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  11. Water ascends in plants through

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  12. Cohesion/transpiration pull theory of ascent of sap was proposed by

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  13. The force responsible for raising water in 100 ft tall plant is

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  14. Ascent of sap is

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  15. Water supply in the plant is due to

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  16. The principle by which blotting paper absorbs water is (a) Capillary ...

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  17. If cohesion-tension transpiration pull theory is correct, a break in w...

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  18. Plant cells dipped in distilled water will become (a) Turgid (b) Pl...

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  19. To initiate cell plasmolysis, salt solution should be

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  20. Water potential and osmotic potential of pure water are respectively

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