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Microbiology of Soils

Microbiology of Soils
The crops which are involved in nitrogen fixation are

soybean
alfalfa and clover
bean and lupine
all of these

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

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

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Microbiology of Soils
Denitrification may be distinguished as

blue baby syndrome
both (a) and (b)
dissimilative
assimilative

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

methanogenic
Hydrolytic
All of these
Transitional

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Microbiology of Soils
The diagnostic enzyme for denitrification is

nitrate oxidase
none of these
nitro oxidoreductase
nitrate reductase

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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
Non symbiotic microorganisms only
None of these

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