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The hormones which help in the intake of...

The hormones which help in the intake of `K^(+)` ions by guard cells and hence speed up the opening of stomata are

A

cytokinins

B

auxins

C

gibberellins

D

ethylene

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The correct Answer is:
A
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TRUEMAN BIOLOGY-TRANSPORT IN PLANTS-Multiple Choice Questions
  1. Mark the correct statement .

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  2. The hormone which promotes the outflow of potassium from guard cells i...

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  3. The hormones which help in the intake of K^(+) ions by guard cells and...

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  4. A leaf with hair on its surface

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  5. Excess of CO(2) in the plant will

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  6. Smaller plants lose more water per unit of leaf area as compared to th...

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  7. Which one will reduce rate of transpiration ?

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  8. A passive hydathode comprises a group of loosely arranged colourless a...

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  9. Root pressure development is responsible for a physiological process o...

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  10. The water that comes out during guttation is

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  11. Which is the most important factor in regulation of transpiration

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  12. Antitranspirants

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  13. Spraying the plant surfaces with silicon emulsion and phenyl mercuric...

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  14. Percentage of water left in the soil when plant wilts is known as

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  15. What is the action spectrum of transpiration ?

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  16. Which is produced during water stress that brings stomatal closure?

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  17. An important factor in stomata opening is

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  18. Which of the following wall of guard cells is thick

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  19. What shall be the sequence of events during wilting of a plant

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  20. Conversion of starch to organic acids is required for

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