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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?

Transitional
methanogenic
All of these
Hydrolytic

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Microbiology of Soils
Nitrogen fixation refers to the direct conversion of atmospheric nitrogen gas into

glucose
ammonia
nitrate
ATP

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

bean and lupine
alfalfa and clover
soybean
all of these

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Microbiology of Soils
Which of the following is capable of oxidizing sulfur to sulfates?

Desulfotomaculum
Rhodospirillum
Rhodomicrobium
Thiobacillus thiooxidans

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Microbiology of Soils
Which are the main source of biofertilisers?

Cyanobacteria
None of these
Streptococcus
Bacillus

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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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