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Microbiology of Soils

Microbiology of Soils
Denitrification may be distinguished as

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

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Microbiology of Soils
Some microorganisms have the ability to increase the nitrogen content of soils, are called as

nitrogen fixation
all of these
nitrification
denitrification

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Microbiology of Soils
The organisms responsible for the characteristic musty or earth odor of a freshly plowed field is/are

Streptomyces
Micromonospora
Nocardia
all of these

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Microbiology of Soils
Which of the following soil microorganism is involved in the reduction of sulfates to H2S?

Thiobacillus thiooxidans
Rhodomicrobium
Rhodospirillum
Desulfotomaculum

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Microbiology of Soils
Denitrification is carried out

usually by facultative anaerobes
predominantly by Bacillus spp
All of these
predominantly by Pseudomonas spp

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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
Transitional
methanogenic

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