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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
All of these
methanogenic
Hydrolytic

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Microbiology of Soils
The nonsymbiotic bacteria which fix nitrogen live in the soil independently are

Azotobacter
Clostridium
All of these
considerably less important in comparison to the symbiotic bacteria

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Microbiology of Soils
Most soil protozoa are flagellates or amoebas, having their dominant mode of nitrogen as

ingestion of bacteria
ingestion of fungi
ingestion of mold
all of these

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

Desulfotomaculum
Thiobacillus thiooxidans
Rhodospirillum
Rhodomicrobium

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Microbiology of Soils
Which of the following microorganism use H2S as the electron donor to reduce carbon dioxide?

Rhodomicrobium
Chlorobium
Chromaticum
Both (a) and (b)

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

Nostoc
Anabaena
Clostridium
Both (a) and (b)

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