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Water is lost through hydathodes. Hydath...

Water is lost through hydathodes. Hydathodes

A

Remain closed at night

B

Remain closed during day

C

Remain always open

D

Remain open during day .

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The correct Answer is:
C
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DINESH PUBLICATION ENGLISH-TRANSPORT IN PLANTS-REVISION QUESTIONS FROM COMPETITIVE EXAMS
  1. Water will enter a cell if it is placed in solution less concentrated ...

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  2. Which one is responsible for opening of stomata ?

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  3. Water is lost through hydathodes. Hydathodes

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  4. Which one is correct ?

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  5. Passive absorption of water by the root system of the result of

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  6. Influx of K(+)ions into guard cells and efflux of H(+) ions from guar...

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  7. Assertion : When the ambient temperature is high and soil contains exc...

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  8. Assertion : In angiosperms the conduction of water is more efficient b...

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  9. Which ones are true and false ? (a)Positive hydrostatic pressure is ca...

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  10. Choose the correct combination of labelling in Potato osmoscope

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  11. Match the columns {:(,I,,II),(a,"Diffusion ",1.,"Hydrophilic substa...

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  12. Who is related to ascent of sap

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  13. Which is incorrect

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  14. Oozing out of water drops from injured edges of tips is

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  15. Upward movement of water in plants is called

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  16. Rate of transpiration will increase if

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  17. Select the correct ones. A-Apoplastic movement of water occurs exclus...

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  18. Which is wrong

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  19. What is the effect of accumulation of K^(+) ions in guard cells ?

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  20. Physiological demonstration of osmosis is carried out by

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