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Which of the following facilitates openi...

Which of the following facilitates opening of stomatal aperture ?

A

Concentration of outer wall of guard cells

B

Decrease in turgidity of guard cells

C

Radial orientation of cellulose microbibrils in the cell wall of guard cells

D

Longitudinal orientation of cellulose microfibrils in the cell wall of guard cells

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The correct Answer is:
C
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AAKASH INSTITUTE ENGLISH-TRANSPORT IN PLANTS -Assignment (Section C) Previous Year Questions
  1. Which of the following facilitates opening of stomatal aperture ?

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  2. The water potential of pure water is

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

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

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  5. Root pressure develops due to

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  6. A column of water within xylem vessels of tall trees does not break un...

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  7. Transpiration and root pressure cause water to rise in plants by

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  8. In a ring girdled plant

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  9. Which one gives the most valid and recent explanation for stomatal mov...

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  10. Which of the following criteria does not pertain to facilitated transp...

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  11. Lenticels are involved in

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  12. Guttation is the result of

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  13. which one of the following structures between two adjacent cells is an...

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

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  15. Guard cells help in

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  16. The rupture and fractionation do not usualy occur in the water column ...

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  17. Two cells A and B are contiguous, Cell A has osmotic pressure 10 atm, ...

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  18. The translocation of organic solutes in sleve tube membres is supportt...

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  19. Potometer works on the principle of

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

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