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2017 Manonmaniam Sundaranar University General B.Sc Microbiology B.S.c (CBCS) Degree Examination/ Agricultural microbiology, manonmanium sundaranar university Question paper



Course: B.Sc Microbiology   University/board: Manonmaniam Sundaranar University

Are you want previous year question papers of agricultural microbiology? here is the question paper from manonmaniam sundaranar university. This is the original question paper from the microbiology fifth semester exam conducted by manonmaniam sundaranar university in year 2016. Freely download this question from here and use it to prepare for your upcoming exams.



CODE NO: 309579 Sub. Code : GMMI51

B.Sc (CBCS) DEGREE EXAMINATION
NOVEMBER 2016

Fifth semester
Microbiology - Main

AGRICULTURE MICROBIOLOGY

PART A(10 * 1 =10 MARKS)
ANSWER ALL QUESTION
Choose the best answer:

1. Father of bacteriological technique is
(a) Robert Koch
(b) Grain
(c) Buchner
(d) Pasteur
2. Actinomyecetes are
(a) Gram negative, aerobic
(b) Gram negative, anaerobic
(c) Gram positive, aerobic
(d) Gram positve, anaerobic
3. Rhizobium has symbiotic association with
(a) Legumes
(b) Non - legume crops
(c) Sugarcane
(d) Paddy
4. All are free living nitrogen fixer except
(a) Azospirullum
(b) Clostridium
(c) Azotobacter
(d) Bacillus polymxa
5. The advantage of plants in mycorrhizal association is/are
(a) Food
(b) Protection
(c) Increased mineral adsorption and disease protection
(d) All of these above
6. In organic matter decomposition of bacteria is involved
(a) Population increases rapidly
(b) Quickly degrade simple compounds- sugars, proteins, amino acids
(c) Have a harder time degrading cellulose, lignin, starch
(d) All above are true.
7. Mycotoxins are
(a) Chemicals
(b) Produced by filamentous fungi
(c) Not essential for fungal growth
(d) Not essential for reproduction
8. Which of the following is the free living nitrogen fixing organism?
(a) Rhizobium
(b) Azotobacter
(c) E. coli
(d) Bacillus sp.
9. Nitrogen fixation by the microorganisms can be detected by adopting the approach of
(a) Demonstrating growth in a nitrogen free medium
(b) Cultivating the microorganisms in the presence of labeled with isotropic nitrogen
(c) Measuring 15N2 by mass spectrometer
(d) All of the above
10. Which one of the following are not the biofertilizers producing bacteria?
(a) Nostoc
(b) Anabaena
(c) Both (a) and (b)
(d) Clostridium

PART - B( 5* 5= 25 MARKS)
Answer all question, Choosing either (a) or (b)

Answer should not exceed 250 words.

11. Write about physio chemical parameters of soil.
(or)
Write short notes on soil nematodes.

12. Write notes on symbiosis.
(or)
Write notes on mutualism.

13. Importance of bio fertilizer in agriculture field.
(or)
Describe biological nitrogen fixation

14. Explain about Biopesticides.
(or)
Describe the nodule formation in plant.

15. Write an account on nitrogen cycle.
(or)
Write a note on xenobiotics degradation.

PART - B( 5* 8= 40 MARKS)
Answer all question, Choosing either (a) or (b)

Answer should not exceed 600 words.

16. Write an essay on the importance of algae in soil remediation.
(or)
Role and importance of bacteria in soil bioremediation.

17. Write brief note on microbial interaction.
(or)
Give detailed note on rumen microbiology.

18. Write an essay on Endomycorrhizae.
(or)
Define biological nitrogen fixation and explain its importance.

19. Explain the significance of rhizosphere in soil.
(or)
Write an essay on citrus canker disease.

20. Write a detailed note on carbon cycle.
(or)
Discuss about the process of the sulphur cycle.





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