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Transport in Plants
Question
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Which of the following facilitates opening of stomatal aperture?

  • Contraction of outer wall of guard cells

  • Decrease in turgidity of guard cells

  • Radial orientation of cellulose microfibrils in the cell wall of guard cells

  • Longitudinal orientation of cellulose microfibrils in the cell wall of guard cells

Answer

C.

Radial orientation of cellulose microfibrils in the cell wall of guard cells

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Some More Questions From Transport in Plants Chapter

Give the term for the ability to resist a pulling force.

Who introduced the apoplast—symplast concept ?

Why transpiration is more on lower surface than on upper surface of leaves ?

Give the term for the ability to rise in thin tubes. 

What is capillarity ?

Name the two forces responsible for the rise of water in a capillary tube.

Which force is first operative in translocation of water through capillarity : cohesive force or adhesive force ?

Name the driving force for water movements in plants.

What are the two factors which affect osmosis?

What is the condition of having more stomata on the lower surface called?