Total No. of Questions 12] [Total No. of Pages 2
M.Sc. (Second) DEGREE EXAMINATION, MAY 2018
Second Year
BOTANY
Microbiology, Mycology and Plant Diseases
Time 3 Hours Maximum Marks 70
SECTION A × 6 30)
Answer any Five questions from the following
Q1) Classification of bacteria.
Q2) Transmission of viruses
Q3) Justification for kingdom Mycetae
Q4) Mastigomycotina
Q5) Dispersal of plant pathogens
Q6) Indexing and forecasting
Q7) Biological control of plant diseases
Q8) Control of TMV
SECTION B × 10 40)
Answer all questions
Q9) Describe the types of nutrition in bacteria.
OR
Explain the role of bacteria in carbon and phosphorus cycles.
Q10) Give a general account of Basidiomycotina.
OR
Describe the economic importance of fungi with reference to mushroom
cultivation.
Q11) Describe the symptoms caused by plant pathogenic fungi, bacteria and viruses.
OR
Explain the role of enzymes, toxins and phytoalexins in pathogenesis.
Q12) Describe the symptoms, etiology, epidemiology and control of smut of sugarcane.
OR
Describe the symptoms, etiology, epidemiology and control of diseases in rice.