ICSE Class 7 Answered
Explain the term macronutrients and micronutrients. How does lack of these affect a plant ? what happens when there is lack of Nitrogen and iron
Asked by dilshadafmc | 04 Nov, 2018, 06:16: PM
Expert Answer
Nutrients needed by organisms in relatively large quantities are macronutrients. Eg - Carbon, Hydrogen, Oxygen, Nitrogen
Micronutrients are nutrients needed in small amounts. Eg - Iron, Manganese, Zinc, Copper, Molybdenum
Lack of nutrients in our human body leads to weaknesss and diseases. Likewise plants too need these nutrients. Without these, the basic characteristics that a plant need to grow might hinder such as soiil rexture, affect to leaves, branches causeing the microorganisms to act upon. The macronutrients help create new plant cells which organize into the plant tissue. Without these nutrients, growth and survival will not occur.
Nitrogen and iron are essential elements for the growth of a plant. Chlorophyll contains nitrogen, and thus the plant requires nitrogen to produce this green pigment. Without nitrogen, the plant becomes yellow in colour.Without iron, the new plant tissue cannot make chlorophyll and undergoes chlorosis.
Answered by Sivanand Patnaik | 05 Nov, 2018, 09:13: AM
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