Q2 of 465 Page 63

Classify nutrients according to their sources.



















Source



Nutrients



(i) Air



Carbon (C)


Oxygen (O)


Hydrogen(H)



(ii) Water



Nitrogen (N)


Phosphorus(P)


Potassium (K)


Calcium (Ca)


Magnesium(Mg)


Sulphur (S)



(iii) Soil



Iron (Fe)


Manganese(Mn)


Boron (B)


Zinc (Zn)


Copper (Cu)


Molybdenum(Mo)


Chlorine (Cl)




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8

Describe fertilizers and compare them with biofertilizers and composts.

 1

Distinguish between micronutrients and macronutrients. Give suitable example.

 3

How plants get nutrients?

 4

Name three most important nutrients required for plant growth.