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Which is produced during water stress th...

Which is produced during water stress that brings stomatal closure?

A

1.ethylene

B

2.Abscisic acid

C

3.ferulic acid

D

4.Coumarin

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The correct Answer is:
B
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TRUEMAN BIOLOGY-TRANSPORT IN PLANTS-Multiple Choice Questions
  1. Percentage of water left in the soil when plant wilts is known as

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  2. What is the action spectrum of transpiration ?

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

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  4. An important factor in stomata opening is

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  5. Which of the following wall of guard cells is thick 1. Lateral 2. In...

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  6. What shall be the sequence of events during wilting of a plant 1. Endo...

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  7. Conversion of starch to organic acids is required for

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  8. Enzyme connected with opening and closing of stomata is 1. Rubisco ...

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  9. Match the apparatus with function 1. a-iv, b-i,c-ii,d-iii 2. a-i...

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  10. Lenticels and hydathodes are small pores with following common attribu...

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  11. Epithem is 1. associated with guttation 2. a group of loosely arran...

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  12. Epidermal cells containing chloraplasts are

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  13. Match the experiment listed under Column I with the aim of the experim...

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  14. The experiment set up shown in the following diagram is for

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  15. In which of the following plants , there will be no transpiration ?

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  16. Oozing out of water drops from injured edges or tips is

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  17. The following figure shows the stomatal apparatus . Identify the parts...

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  18. The given diagram is of

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  19. At the time of active growth ( formation of buds and flowers ) a part ...

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  20. For conducting girdling experiments

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