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Microbiology of Soils

Microbiology of Soils
For rapid decomposition by microbes, the substrate should have a C/N ratio of

30-40
20-30
60-80
10-20

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Microbiology of Soils
Assimilative denitrification is done by

fungi
plants
all of these
prokaryotes

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Microbiology of Soils
Which are the main source of biofertilisers?

Cyanobacteria
Streptococcus
None of these
Bacillus

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

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

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Microbiology of Soils
Which of the following fungi on infecting crop roots can improve their uptake of phosphorus and other nutrients?

Aspergillus niger
Saccharomyces cerevisiae
VA Mycorrhiza
Candida torulopsis

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

Clostridium
Both (a) and (b)
Nostoc
Anabaena

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