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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
- Rhizocalin is a additional hormonal substance which is secreted by
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- Electron microscopic studies of the sarcomeres have revealed that during muscle
- Organalles important in spindle formation during nuclear division is
- The enzyme that is not present in succusentericus is :
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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