Multiple choice What is the significance of 'ash' in the study of mineral nutrition of plants? It indicates what minerals are present in the soil. It indicates which element is essential and in what amount it is necessary for a particular plant. It is of no practical significance. It indicates how much irrigation is needed by the plant. Reveal answer Fill a bubble to check yourself B Correct answer Explanation Ash of a plant indicates which element is essential and in what amount it is necessary for a particular plant.