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Most of the water lost by the plant thro...

Most of the water lost by the plant through transpiration exist through the stomatal pores . Which of the following statements about transpiration and stomatal functioning is false ?

A

Stomata normally open in response to a shift from dark to light conditions

B

When the turgor pressure of guard cells increases , the stomatal aperture opens

C

With the shift from dark to light , the osmotic potential becomes less negative resulting in stomatal closure

D

The turgor pressure of guard cells increases after the osmotic potential becomes more negative

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The correct Answer is:
C
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TRUEMAN BIOLOGY-TRANSPORT IN PLANTS-Multiple Choice Questions
  1. Given below some properties of transport mechanism. Which of these ar...

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  2. Water potential in leaf tissue is 'positive' (near zore ) during

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  3. Most of the water lost by the plant through transpiration exist throug...

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  4. Consider the following statements 1. Xylem vessels are semi-permeab...

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  5. Consider the following events involved in stomatal opening 1. Turgo...

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  6. Consider the following statements Osmosis is a process of transport...

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  7. Which of the following molecules is capable of generating the greates...

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  8. Pressure potential of a plant cell and its turgor pressure are

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  9. In simple osmotic systems, at constant temperatures , the water pote...

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  10. Addition of KCN reduces the rate of water absorption in the root. This...

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  11. The carrier - mediated cotransport in which a solute is actively trans...

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  12. A minimum ratio of transpiration to photosynthesis will be observed on...

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  13. LAR or leaf area ratio is the total area of leaves per total plant wei...

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  14. The osmotic pressure of 0.1 M glucose and 0.1 M sucrose solution are ...

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  15. Addition of chemical fertilizers claims increased irrigation to avoid ...

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  16. During the opening of stomata , the organic malate ions are produced ...

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  17. The translocation of organic solutes in sleve tube membres is supportt...

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  18. Sinks are related to

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  19. When the concentration of the soil solutes is low, the absorption of w...

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  20. Guard cells help in

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