Total No. of Questions 12] [Total No. of Pages 2
M.Sc. DEGREE EXAMINATION, MAY 2017
(Second Year)
BOTANY
Microbiology, Mycology and Plant Diseases
Time 3 Hours Maximum Marks 70
SECTION A × 6 30)
Answer any Five questions
Q1) Role of bacteria in carbon cycle
Q2) Transmission of Viruses
Q3) Mtxomycota
Q4) Importance of Fungi
Q5) Plant disease indexing
Q6) Dispersal of plant pathogens
Q7) Little leaf of Brinjal
Q8) Rust of ground nut
SECTION B × 10 40)
Answer all questions
Q9) Describe the nutritional types of bacteria.
OR
Describe the morphology and ultra structure of Bacteria.
Q10) Write an account on Zygomycotina.
OR
Describe how the Mushrooms are cultivated.
Q11) Describe the role of enzymes and toxins in pathogenesis and physiological
changes in diseased plants.
OR
Describe the symptoms caused by plant pathogenic Fungi and Bacteria.
Q12) Write an account on the principles of disease control and biological control of
plant disease.
OR
Describe the symptoms, etiology, epidemiology and control of Blast disease of
Rice.