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Find the correct pair of statements (i)...

Find the correct pair of statements (i) Influx of cl' into guard cells during stomatal opening is active (ii) Entry of sucrose from companion cells into sieve tubes at source involves expenditure of energy (iii) At the sinks sucrose moves out of phloem by passive transport (iv) Efflux of `K^(+)` from guard cells during stomatal closure does not involve energy expenditure

A

ii,iv

B

ii,iii

C

`i`,iii

D

iii, iv.

Text Solution

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The correct Answer is:
C
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Find out the correct pair of statements (i) In completely plasmolysed cell, pressure potential does not contribute to water potential (ii) If a cell is placed in hypotonic solution for longer time , the cell membrane shrinks away from its cell wall (iii) Apoplastic system comprises interconected protoplasts (iv) Polypeptides have more imbibing capacity then polysaccharides

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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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