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Enlist the role of following minerals and the symptoms caused due to their deficiency : 

(a) Calcium 

(b) Boron 

(c) Chlorine.

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(a) Calcium: 

Role : Involved in selective permeability of cell membranes, activator of certain enzymes, required as calcium pectate in middle lamella of cell wall at root and stem apex (for cell division). 

Deficiency symptom : stunted growth.

(b) Boron: 

Role : Required for uptake and utilization of Calcium (Ca2+), pollen germination, cell differentiation, carbohydrate translocation. Deficiency symptom : Brown heart disease

(c) Chlorine: 

Role : Na+ and K+ help to determine solute concentration and anion – cation balance in cells, necessary for oxygen evolution in photosynthesis. Deficiency symptom : Poor growth of plant.

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