8.Microbes in Human Welfare
medium

Give differences : Chemical fertilizer and Biotic fertilizer

Option A
Option B
Option C
Option D

Solution

Chemical fertilizer Biotic fertilizer
$(1)$ Different types of chemicals are used in chemical fertilizer.  $(1)$ Different types of microbes are used in biotic fertilizer.
$(2)$ Excessive use of chemical fertilizer increases pollution of land.  $(2)$ Biofertilizer makes the soil fertile and increases crop yield.
$(3)$ Nitrogen, phosphorus potassium etc are used as a source.  $(3)$ Bacteria, fungi and cynobecteria are used as a source.
$(4)$ Chemical fertilizer is harmful for environment.  $(4)$ Biofertilizer is advantageus for environment.

 

Standard 12
Biology

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