Multiple choice Immobile elements are N, P, Mo, Mg, K N, P, Mo, Mg, K, Ca N, P, Mo, Mg, K, Zn B, Fe, Ca Reveal answer Fill a bubble to check yourself D Correct answer Explanation Immobile elements in plants include Boron (B), Iron (Fe), and Calcium (Ca). These elements are not easily moved through the phloem to new growth.