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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 ENGLISH-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 ce...

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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. Water exudation through hydathodes is

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  9. Apoplast movement of water occurs through:

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  10. In plants opening of stomata is regulated by

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  11. Incipient plasmolysis is

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  12. Basis of stomatal opening is

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  13. The movement of water molecules from a region of high concentration t...

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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 stomata} 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 : Translocation of sugar 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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