Question

Which elements are considered as balancing elements?

• A. Ca and K
• B. C and H
• C. N and S
• D. Mg and Fe

Answer 1

Answer: (A)

Ca and K

Based on the mobility in phloem, elements are also classified into three types.

1. Mobile elements : N, K, P, S and Mg

2. Immobile elements : Ca, Fe and B

3. Intermediate : Zn, Mn, Cu, Mo

Functions of elements

Protoplasmic elements : N, P, S

Balancing elements : Ca, Mg, K – counteract to toxic effects of other minerals by causing ionic balance.

Frame work elements : C, H2O – as they are the constituents of carbohydrates that form cell walls.

Catalytic elements : Mn, Cu, Mg, etc.