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GeneralClass 12AllAnswered 27 Mar 2026
Answer
(i) Phosphorus is a macronutrient while chlorine is a micronutrient.
(ii) In plants, sodium is a non-essential element.
(iii) The mineral element which is a constituent of middle lamella is calcium.
(iv) Any mineral ion concentration that reduces dry weight by about 10% is said to be toxic.
(v) Xylem is the path of translocation of minerals.
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