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Microbiology of Soils

Microbiology of Soils
Denitrification may be distinguished as

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

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

Clostridium
Both (a) and (b)
Anabaena
Nostoc

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Microbiology of Soils
Degree of compost maturity can be assesed by

None of these
both (a) and (b)
infrared technique
germination test

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Microbiology of Soils
Which of the following species of different genera of bacteria are not capable of transforming nitrate to nitrogen?

None of these
Agrobacterium
Achromobacter
Alcaligenes

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

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

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Microbiology of Soils
__________ play a key role in the transformation of rock to soil.

Cyanobacteia
Pectin decomposing bacteria
De-nitrifying bacteria
Nitrifying bacteria

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