Give three functions of potassium in plants.
GeneralClass 12AllAnswered 27 Mar 2026
Answer
Potassium (K) performs several critical physiological roles:
- Maintains anion-cation balance: Regulates ionic equilibrium in cells and maintains electrical neutrality.
- Stomatal movement: Essential for opening and closing of stomata—K⁺ influx into guard cells causes stomatal opening.
- Cell turgidity: Helps maintain turgor pressure in cells, essential for cell expansion and structural rigidity.
Additional functions: Enzyme activation, protein synthesis, carbohydrate metabolism.
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