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Microbiology - Microbiology of Soils

Exercise : Microbiology of Soils - Section 1
  • Microbiology of Soils - Section 1
16.
Nitrogen oxidation (nitrification)refers to the
conversion of ammonium ions into nitrates through the activities of certain bacteria.
changing of atmospheric nitrogen (N2) to nitrogen compounds
sulfur is oxidized to the sulfate form through Thiobacillus bacteria
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
An example of a symbiotic nitrogen fixer is
Azotobacter
Beijerinckia
Clostridium
Rhizobium
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Which of the following is correct?
Mycorrhizae are fungi that form a mutually beneficial (symbiotic) relationship with plant roots
The fungi aid in transmitting nutrients and water to the plant roots
The increased nutrient availability from mycorrhizae is thought to be due to the additional absorbing surface provided by the fungi
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
In the process of nitrogen fixation, which of the following microorganism is involved?
Non symbiotic microorganisms only
Symbiotic microorganisms only
Non symbiotic and symbiotic microorganisms only
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Which of the following statement is not true about composition of biogas?
It is composed almost exclusively of methane and carbon dioxide
It also contains with traces of H2S, N2, H2and CO
It also contains with traces of O2 and Cl2
Both (a) and (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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