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Microbiology of Soils

Microbiology of Soils
Assimilative denitrification is done by

all of these
plants
prokaryotes
fungi

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Microbiology of Soils
The breakdown of cattle manure in biogas is accomplished by which of the following type of bacteria?

Hydrolytic
All of these
methanogenic
Transitional

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Microbiology of Soils
Which are the main source of biofertilisers?

None of these
Cyanobacteria
Bacillus
Streptococcus

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Microbiology of Soils
The nitrogenase consists of

dinitrogenase reductase
dinitrogenase
both (a) and (b)
none of these

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Microbiology of Soils
Degree of compost maturity can be assesed by

both (a) and (b)
infrared technique
None of these
germination test

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Microbiology of Soils
__________ play a key role in the transformation of rock to soil.

De-nitrifying bacteria
Pectin decomposing bacteria
Cyanobacteia
Nitrifying bacteria

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