Q.
Heterotrophic bacteria help in a. Curdling of milkb. Production of antibioticsc. Nitrogen fixation
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a
a only
b
a, b and c
c
a and b
d
b only
answer is B.
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Detailed Solution
Heterotrophic bacteria likeLactobacillus helps in curdling of milk Rhizobium helps in fixation of nitrogen in legumes Bacillus species help in production of antibiotics.
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