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Which of the following facilitates openi...

Which of the following facilitates opening of stomatal aperture ?

A

Contraction of outer wall of guard cells

B

Decreases in turgidity of guard cells

C

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

D

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

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DINESH PUBLICATION-TRANSPORT IN PLANTS-REVISION QUESTIONS FROM COMPETITIVE EXAMS
  1. Water potential of soil quantified in term of

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  2. Identify the wrong statement

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  3. Find the correct pair of statements (i) Influx of cl' into guard cel...

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  4. Arrange the following in ascending order based on their solute concent...

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  5. Photosynthates are translocated from source to sink organs mainly in t...

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  6. The movement of water and minerals in xylem and the movement of phloem...

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  7. In the given diagram, which is the initial condition of plasmolysis

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  8. Process of water exudation from hydathodes is known as

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  9. Apoplastic movement of water occurs exclusively through the the (i) In...

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  10. In plants opening of stomata is regulated by

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  11. In cipient plasmolysis is

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  12. Turgor pressure of a plant cell increases due to

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  13. The movement of solvent molecules into the region of higher solute con...

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  14. Which of the following equations is correct in respect of osmotic phen...

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  15. X and Y are adjacent living cells. The cell X has solute potential (Ps...

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

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

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  18. A plasmolysed cell can be deplasmolysed by placing it in

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  19. Assertion : Trasnlocation of suger from source to sink is defined as p...

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

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