Tamilnadu BoardEnglish MediumSTD 11BIO BOTANYMineral Nutrition3 Marks
Question
Explain briefly the functions and deficiency symptoms of potassium.
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Answer
Functions: Maintains turgidity and osmotic potential of the cell, opening and closure of stomata, phloem translocation, stimulate activity of enzymes, anion and cation balance by ion - exchange. It is absorbed as $K ^{+}$ions. Deficiency symptoms: Marginal chlorosis, necrosis, low cambial activity, loss of apical dominance, lodging in cereals and curled leaf margin.
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