Question

Which of the following groups of elements are mobile?

• A. $Fe,Ca,B$
• B. $N,P,K$
• C. $B,K,Ca$
• D. $Ca,Mg,K$

Answer 1

The correct option is B $N,P,K$

Mobile nutrients are able to move (translocate) from one part of the plant to another as needed. When a nutrient shortage occurs, mobile nutrients travel to the area to solve the deficiency. Nitrogen (N), phosphorus (P), potassium (K) and magnesium (Mg) are mobile elements.