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Which one gives the most valid and recent explanation for stomatal movements ?
Options
(a) Potassium influx and efflux
(b) Starch hydrolysis
(c) Guard cell photosynthesis
(d) Transpiration
Correct Answer:
Potassium influx and efflux
Explanation:
The opening and closing of stomata are caused by influx and efflux of potassium ions (K⁺). The increase of K⁺ results in opening of stoma and decrease of K⁺ causes closing of stoma. The turgidity of guard cells induces to open the pores of stomata found on the surface of leaves.
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Topics: Human Health and Disease
(70)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In mitochondrial electron transport system for every two pairs of electrons
- The peritubular capillaries of the nephron arise from the
- Amount of saliva secreted daily in humans is
- Ozone prevents the entry of
- The upright pyramid of number is absent in
Topics: Human Health and Disease (70)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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