NEET Biology question

Not in NEET syllabus

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

(A)Starch hydrolysis
(B)Guard cell photosynthesis
(C)Transpiration
(D)Potassium influx and effluxCorrect

Answer: (D)

Solution

The currently accepted mechanism for stomatal opening and closing is the active K⁺ (potassium) ion flux theory: influx of K⁺ (and Cl⁻) into guard cells lowers their water potential, drawing

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Question ID VK-127837