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Transport In Plants

Question
CBSEENBI11002301
Wired Faculty App

Which one gives the most valid and recent explanation for stomatal movements?

  • Transpiration

  • Potassium influx and efflux

  • Starch hydrolysis

  • Guard cell photosynthesis

Solution

B.

Potassium influx and efflux

Levitt in 1954 proposed active potassium transport theory, which is the most valid and recent explanation for stomatal movements. It is a explained below as:

Some More Questions From Transport in Plants Chapter

Why the cortex produces no resistance to movement of water ?

What is transmembrane pathway ?

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.

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