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Microbiology of Soils

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

all of these
Micromonospora
Streptomyces
Nocardia

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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?

VA Mycorrhiza
Aspergillus niger
Candida torulopsis
Saccharomyces cerevisiae

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Microbiology of Soils
The population of algae in soil is __________ that of either bacteria or fungi.

generally smaller than
equal to
generally greater than
none of these

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Microbiology of Soils
Degree of compost maturity can be assesed by

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

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Microbiology of Soils
The diagnostic enzyme for nitrogen-fixing organisms is

nitrate oxidase
none of these
nitrate reductase
nitrogenase

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Microbiology of Soils
Denitrification may be distinguished as

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

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