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Microbiology - Microbiology of Soils

Exercise : Microbiology of Soils - Section 1
  • Microbiology of Soils - Section 1
1.
The nonsymbiotic bacteria which fix nitrogen live in the soil independently are
Azotobacter
Clostridium
considerably less important in comparison to the symbiotic bacteria
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
Nitrogen fixation by the microorganisms can be detected by adopting the approach of
demonstrating growth in a nitrogen free medium
cultivating the microorganisms in the presence of nitrogen labeled with isotropic nitrogen
measuring15N2 by mass spectrometer
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
Which of the following is not the biofertilisers producing bacteria?
Nostoc
Anabaena
Both (a) and (b)
Clostridium
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
Which of the following is capable of oxidizing sulfur to sulfates?
Thiobacillus thiooxidans
Desulfotomaculum
Rhodospirillum
Rhodomicrobium
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
Most soil protozoa are flagellates or amoebas, having their dominant mode of nitrogen as
ingestion of bacteria
ingestion of mold
ingestion of fungi
all of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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