Which of the following elements in plants are relatively immobile and are a part of the structural component of the cell ? (A) Sulphur and calcium (B) Sulphur and potassium (C) Calcium and magnesium (D) Potassium and magnesium
Option A.Calcium along with sulphur is most immobile element present in plants. Hence, deficiency symptoms of calcium and sulphur are first seen in young leaves. Calcium is present in the cell wall as calcium pectate, which cannot be readily mobilised. Hence, calcium is an immobile element
