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In a branch cut from a rapidly transpiri...

In a branch cut from a rapidly transpiring plant , water snaps away from the cut end . It shows that

A

it is under tension

B

it is in excess in vessels

C

it has been absorbed by capillary force

D

it has been absorbed by imbibition force.

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The correct Answer is:
A
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TRUEMEN BIOLOGY ENGLISH-TRANSPORT IN PLANTS-Multiple Choice Questions
  1. The energy source that mainly drives the upward flow of water is

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  2. According to Dixon and Jolly's Cohesion Theory the channel for ascent...

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  3. In a branch cut from a rapidly transpiring plant , water snaps away fr...

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  4. The osmotic pressure of the leaf cells is maximum in the afternoon, th...

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  5. Root pressure does not take an active part in the ascent of sap becaus...

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  6. In the given TS of root , what part A,B and C

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  7. Cohesion transpiration pull theory operates in

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  8. Which contributes most to the transport of water from the soil to the ...

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  9. Movement of H(2)O through cell wall is called

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  10. Water lost by transpiration is

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  11. Cobalt chloride is blue in anhydrous state . In contact with water va...

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  12. Which of the following amphistomatous leaves would dry up last ?

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  13. Sunken stomata are mainly seen in leaves of

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  14. In terrestial habitats , temperature and rain fall conditions are in...

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  15. Main function of lenticel is

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  16. Apart from stomata through which other way can oxygen enter the plants...

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  17. Transpiration in plants is

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  18. Transpiration from the plants would be most rapid when

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  19. When stomata open only at night they are called

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  20. Which of the following is not a function of transpiration ?

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