Microbial Ecology and Diversity (Paper – VIII) 2014 Question Paper Solapur University Question Paper

Solapur University Question Paper M.Sc. – I (Semester – II) Examination, 2014 MICROBIOLOGY (New) (C.G.P.A. Pattern) Microbial Ecology and Diversity (Paper – VIII) Day and Date : Tuesday, 29-4-2014 Max. Marks : 70 Time :11.00 a.m. to 2.00 p.m. N.B. : I) Part – I, question 1 is compulsory. II) Attempt any four questions from Part – II. III) Figures to the right indicate full marks. IV) Answers to the two Parts should be written in the same answer book. PART – I 1. Rewrite the following sentences by selecting the correct answer from given alternatives : 14 1) Association between fungi and the roots of higher plant is __________ A) Lichen B) Mycorrhiza C) Mycoplasma D) Root nodule 2) _________________ are cell wall-less bacteria. A) Actinomycetes B) Nocardia C) Mycoplasma D) Mycobacteria 3) _____________ are often present in anaerobic, hyper saline or high temperature environments. A) Archaeobacteria B) Algae C) Mycoplasma D) Fungi 4) Symbiotic association consisting of a specific fungus and algae is ________ A) Mycoplasma B) Lichen C) Nodule D) Cyanellae SLR-VO – 8 -2- 5) Magnetosomes are responsible for ___________ A) Chemotaxis B) Aerotaxis C) Magnetotaxis D) Phototaxis 6) Ability of cyst formation on nitrogen-free medium can be shown by __________ A) Candida B) Azotobacter C) Bacillus D) Rhizobium 7) The study of microbial relationships with other organisms and with their non-living environment is ______________ A) Microbial Ecology B) Microbial Genetics C) Microbial Physiology D) Microbial Metabolism 8) Endolithic microorganisms are found in _______________ A) Rumen B) Root nodules C) Stem nodules D) Cracks and cavities in the rock 9) Dimorphism is found in _____________ A) Candida B) Protozoa C) Algae D) Viruses 10) The ability of microorganisms to communicate and co-ordinate by the use of chemical signal molecules is called ___________ A) Phototaxis B) Aerotaxis C) Communication D) Quorum sensing 11) Nitrogen fixation depends on the ____________ enzyme system. A) Protease B) Nitrogenase C) Amylase D) Cellulase 12) Organisms which contain both chlorophyll A and B and carry out oxygenic photosynthesis are ______________ A) Diazotrophs B) Nondiazotrophs C) Prochlorales D) Archaeobacteria -3- SLR-VO – 8 13) Infectious agent comprising small, protein free, circular, single strandard RNA is ___________ A) Cyst B) Bacteroid C) Prion D) Cynobacterium 14) The process in which organic matter is decomposed to release simple inorganic compound is called ___________ A) Mineralization B) Immobilization C) Assimilation D) Transmission PART – II Attempt any four questions : 2. Explain in detail anoxygenic photosynthetic bacteria. 14 3. Describe in brief general characteristics of archaeobacteria. 14 4. Describe in detail microbe-plant interactions with examples. 14 5. Describe in brief (any two) : 14 a) Control of biodeterioration b) Bioluminescence c) Halophilic bacteria. 6. Write short notes on (any two) : 14 a) Bioleaching b) Microbial fossils c) Xenobiotics. _____________________