Provide Manure to Soil

Organic wastes(like dead plants and animals) are decomposed by bacteria

These provide nutrients to soil


Provide Nitrogen in Soil

Some bacteria fix nitrogen from atmosphere into soil.This helps in making soil fertile

So these are called Biological Nitrogen Fixers

Nitrogen Fixing Bacteria In Soil  Convert Nitrogen Into Nitrogenous Compounds(Nutrients)


Rhizobium Bacteria lives in roots of pea plant(leguminous plant) which convert nitrogen in air into Nitrogenous Compounds(Nutrients)



NCERT Question 1 (b) - Fill in the blanks:

Blue green algae fix __________ directly from air to enhance fertility of soil.

View Answer

  1. Class 8
  2. Chapter 2 Class 8 - Microorganisms : Friend and Foe

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CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 9 years and a teacher from the past 16 years. He teaches Spoken English, Written English, Grammar and Vocabulary at Englishtan.