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Microbiology of Soils

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

Hydrolytic
methanogenic
All of these
Transitional

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Microbiology of Soils
The population of algae in soil is __________ that of either bacteria or fungi.

generally smaller than
equal to
generally greater than
none of these

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Microbiology of Soils
Which of the following is not the biofertilisers producing bacteria?

Anabaena
Nostoc
Both (a) and (b)
Clostridium

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Microbiology of Soils
In the process of nitrogen fixation, which of the following microorganism is involved?

Symbiotic microorganisms only
Non symbiotic and symbiotic microorganisms only
None of these
Non symbiotic microorganisms only

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Microbiology of Soils
The phenomenon of commensalism refers to a relationship between organisms in which

None of these
one species of a pair benefits
one species of a pair is more benefited
both the species of a pair benefit

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Microbiology of Soils
The nitrogenase consists of

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

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