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When turgidity is lost in guard cells th...

When turgidity is lost in guard cells the stomatal pore

A

Remains unchanged

B

Gets plasmolysed

C

Becomes closed

D

Opens fully

Text Solution

Verified by Experts

The correct Answer is:
C
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Assetion: The stmatal pore, guard cells and the surrounding subsidiary cells are tohether called stomatal aperture. Reason: The outer walls of guard cells (alway from stomatal pore) are highly thickened and the inner walls (towards the stomatal pore ) are thin

MODERN PUBLICATION-TRANSPORT IN PLANTS-COMPETITION FILE (MULTIPLE CHOICE QUESTIONS)
  1. Which of the following is not a purpose of transpiration

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  2. Osmotic pressure of pure water is

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  3. When turgidity is lost in guard cells the stomatal pore

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  4. The osmotic expanison of a cell kept in water is chiefly regulated by

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  5. The phenomenon of water moving out of cell an plasma membrane shrinkin...

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  6. In a plant cell DPD is zero when it is ………..

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  7. The number of stomatal pores per cm^(2) of leaf surface are in the ran...

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  8. transport proteins of endodermal cells are control point where a plan...

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  9. Water potential gradient between the absorbent and the liquid imbibed ...

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  10. Which of the following is not correct in mass flow hypothesis ?

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

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  12. Specialised epidermal cells surrounding the guard cells are called

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

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  14. The water potential of pure water is

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  15. Root hairs develop from the region of

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

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  17. Stomata in grass leaf are

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  18. If the concentration of external solution is more than the cytoplasm, ...

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  19. Water is released as droplet this is known as :

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  20. Stomata of a plant open due to

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