Mnemonic (pronounced as “ne MON ik”) is a useful system of patterns, letters, ideas, or associations which assists in remembering something. To remember the Macronutrients and Micronutrients elements easily, we have prepared two funny mnemonics (in Hindi). Hope, these will help you in Board as well as NEET examination.
Out of 17 essential elements 9 elements are considered to be macro-elements and 8 elements are considered as micro-elements.
Refer Class 11 Biology NCERT Page No. 196:
Macronutrients are generally present in plant tissues in large amounts (in excess of 10 mmole Kg–1 of dry matter). The macronutrients include carbon, hydrogen, oxygen, nitrogen, phosphorous, sulphur, potassium, calcium and magnesium. Of these, carbon, hydrogen and oxygen are mainly obtained from CO2 and H2O, while the others are absorbed from the soil as mineral nutrition.
Micronutrients or trace elements, are needed in very small amounts (less than 10 mmole Kg–1 of dry matter). These include iron, manganese,
copper, molybdenum, zinc, boron, chlorine and nickel. In addition to the 17 essential elements named above, there are some beneficial elements such as sodium, silicon, cobalt and selenium. They are required by higher plants.
The easy way to remember those elements are-
Macronutrients/ Macroelements: “Manager koun pk sor kiya” (Mg CHON PK S Ca) i.e. magnesium, carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, sulphur, calcium.
Micronutrients/ Microelements: “Maan Maro Nehi Chill Karo Feko Boring Zindegi” ( Mn Mo Ni Cl Cu Fe B Zn) i.e. Manganese, molybdenum, nickel, chlorine, copper, iron, boron, zinc.
Hope this helps.