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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.
Related Questions: - Which of the following sets of cell organelles contains DNA?
- Cymose inflorescence is present in :
- The nucleus is seperated from surrounding cytoplasm by a nuclear membrane
- In land plants, the guard cells differ from other epidermal cells in having :
- Double fertilization is the characteristic of
Topics: Human Health and Disease
(70)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following sets of cell organelles contains DNA?
- Cymose inflorescence is present in :
- The nucleus is seperated from surrounding cytoplasm by a nuclear membrane
- In land plants, the guard cells differ from other epidermal cells in having :
- Double fertilization is the characteristic of
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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