2022 · Q42
Depending on the requirements, plant nutrients are classified as micronutrients and macronutrients. Which one of the following is an example of a macronutrient?
general-sciencebiology-plants
- AManganese
- BCopper
- CMagnesium
- DChlorine
Explanation
Macronutrients are required by plants in large quantities (N, P, K, Ca, Mg, S); magnesium is a macronutrient — it is the central atom of the chlorophyll molecule. Manganese (option A), copper (option B) and chlorine (option D) are all micronutrients, needed only in trace amounts. Hence option C.