alleryIn organic farming, which microbe is used in a solution to supply nitrogen and prevent soil pollution from chemical fertilizers?
AAzotobacter
BAcetobacter
CXanthomonas
DStreptococcus
Answer & Solution
Correct answer: A. Azotobacter
1. Microbial inoculants supply nutrients to plants in organic farming.
2. A solution of Azotobacter with nitrogenase is used for this.
3. It prevents soil pollution caused by chemical fertilizers.
4. Acetobacter makes vinegar, Xanthomonas makes gum, and Streptococcus is a dairy microbe.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 7 "Introduction to Microbiology", p.94_
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