Discussion
Home ‣ Microbiology ‣ Microbiology of Soils Comments
- Question
Which of the following is correct?
Options- A. Mycorrhizae are fungi that form a mutually beneficial (symbiotic) relationship with plant roots
- B. The fungi aid in transmitting nutrients and water to the plant roots
- C. The increased nutrient availability from mycorrhizae is thought to be due to the additional absorbing surface provided by the fungi
- D. All of the above
- Correct Answer
- All of the above
- 1. The breakdown of cattle manure in biogas is accomplished by which of the following type of bacteria?
Options- A. Hydrolytic
- B. Transitional
- C. methanogenic
- D. All of these Discuss
- 2. Syntrophism involves
Options- A. exchange of nutrients between two species
- B. exchange of nutrients among species
- C. no exchange of nutrients between two species
- D. no exchange of nutrients among species Discuss
- 3. The diagnostic enzyme for denitrification is
Options- A. nitrate reductase
- B. nitrate oxidase
- C. nitro oxidoreductase
- D. none of these Discuss
- 4. Which of the following statement is not true about composition of biogas?
Options- A. It is composed almost exclusively of methane and carbon dioxide
- B. It also contains with traces of H2S, N2, H2and CO
- C. It also contains with traces of O2 and Cl2
- D. Both (a) and (b) Discuss
- 5. Which of the following is capable of oxidizing sulfur to sulfates?
Options- A. Thiobacillus thiooxidans
- B. Desulfotomaculum
- C. Rhodospirillum
- D. Rhodomicrobium Discuss
- 6. The microbial ecosystem of soil includes
Options- A. biotic components of soil
- B. abiotic components of soil
- C. biotic and abiotic components of soil
- D. none of the above Discuss
- 7. The phenomenon of commensalism refers to a relationship between organisms in which
Options- A. one species of a pair benefits
- B. both the species of a pair benefit
- C. one species of a pair is more benefited
- D. none of the above Discuss
- 8. __________ play a key role in the transformation of rock to soil.
Options- A. Cyanobacteia
- B. Pectin decomposing bacteria
- C. Nitrifying bacteria
- D. De-nitrifying bacteria Discuss
- 9. The conversion of molecular nitrogen into ammonia is known as
Options- A. nitrification
- B. denitrification
- C. nitrogen fixation
- D. ammonification Discuss
- 10. Which of the following species of different genera of bacteria are not capable of transforming nitrate to nitrogen?
Options- A. Achromobacter
- B. Agrobacterium
- C. Alcaligenes
- D. None of these Discuss
Microbiology of Soils problems
Search Results
Correct Answer: All of these
Correct Answer: exchange of nutrients between two species
Correct Answer: nitrate reductase
Correct Answer: It also contains with traces of O2 and Cl2
Correct Answer: Thiobacillus thiooxidans
Correct Answer: biotic and abiotic components of soil
Correct Answer: one species of a pair benefits
Correct Answer: Cyanobacteia
Correct Answer: nitrogen fixation
Correct Answer: None of these
Comments
There are no comments.More in Microbiology:
Programming
Copyright ©CuriousTab. All rights reserved.