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8.Microbes in Human Welfare
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Bacteria found in root nodules of legumes are
A
Nitrobacter
B
Nitrosomonas
C
Rhizobium
D
Azotobacter
Solution
(c) Root nodules contain nitrogen fixing bacteria $(Rhizobium \,\,leguminosarum)$ which fix atmospheric free nitrogen in to ammonia.
The fixed nitrogen is absorbed by the plant.
In return, the plant provides food and shelter to bacteria.
Such an association is called mutualistic symbiosis.
Standard 12
Biology
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