試題詳解

12. Which of the following is not true about micronutrients in plants?
(A) They generally help in catalytic functions.
(B) They are elements required in relatively small amounts.
(C) Overdoses of them can be toxic.
(D) They are essential elements of plants’ small size and molecular weight.
(E) They are required for a plant to grow from a seed and complete its life cycle.