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What will be the effect of accumulation of K⁺ ions in guard cells
Options
(a) Water potential increases
(b) Water potential decreases
(c) Loss of turgidity
(d) Exosmosis
Correct Answer:
Water potential decreases
Explanation:
The opening and closing of stomata depends on the concentration of solutes in the guard cells (the main component of the solute concentration in guard cells is K⁺). When the concentration of solutes, K⁺ ion guard cells increases, their osmotic pressure increases. In other words, their water potential decreases. As a result of this, they absorb water from their surrounding epidermal cells, their turgidity increases.
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Topics: Transport and Nutrition in Plants
(163)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The gas exchange surface in an earthworm is
- Which one of the following is not the function of placenta? It :
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- How many meiotic divisions are required to produce 100 pollen grains
- Electroencephalography is used to map regions of brain activity associated
Topics: Transport and Nutrition in Plants (163)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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