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Root pressure is absent in ................

Root pressure is absent in .............

A

rapidly transpiring plants

B

conifers

C

plant growing in cold soils

D

all of these

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CHETANA PUBLICATION-PLANT WATER RELATION-Exercise
  1. Water in plants is transported by ..........

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  2. Root pressure is maximum when ..................

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  3. Root pressure is absent in .............

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  4. The absorbed water can rise to highest point by ........

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  5. The mechanism by which water moves from roots to leaves is called........

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  6. The force responsible for raising water in 100 ft tall plant is .........

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  7. Cohesive force of water is between .......

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  8. Transpiration- cohesion - tension theory operates in ............

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  9. Rate of water absorption can be increase through ........

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  10. Rate of water absortion is slow near freezing point because ..........

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  11. Which of the following is called necessary evil?

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  12. "Transpiration is a necessary evil" was given by .... .....

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  13. Transpiration occurs in ..........

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  14. In plants, the process of transpiration helps in ..........

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  15. In lenticular transpiration, loss of H2O in the form of water vapour i...

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  16. Which of the following is not a the type of transpiration ?

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  17. The rate of transpiration is practically nil during ............

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  18. Minimum transpiration is found in ..........

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  19. Wilting appears due to excessive............

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  20. Stomata in angiosperms open and close due to ........

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