Fungi, Lichen & Plant Pathology (Botany) 2012-13 Questions

Group – A

  1. What are mycelia and hypha? Discuss different phases of sexual reproduction in fungi.
  2. What are primary and secondary mycelia? In which class of fungi do they occur? What is the Buller phenomenon? Write down the process of sexual reproduction in Basidiomycetes.
  3. Discuss the structural characteristics of plants that offer resistance to plant pathogens. Write down the role of toxins in causing plant disease.
  4. What are hypoplastic and hypertrophic symptoms? How do the pathogens spread within the plant body?

Group – B

  1. What is a clamp connection? Describe the fruit bodies in Fungi Imperfecti.
  2. What is conidiospore? Write down their production processes.
  3. What is the disease cycle? Discuss the postulates of Robert Koch.
  4. Distinguish between primary and secondary inoculum. What is meant by the disease triangle?
  5. Describe the method of sexual reproduction in Penicillium.
  6. Describe the symptoms and control measures of late blight of potato.

Group – C

  1. Write down the name of the fungal pathogen and symptoms of the disease in the wheat plant.
  2. How does systemic fungicide work? Name two such fungicides.
  3. Write short notes on plant quarantine.
  4. Define: Pathogen, pathogenicity, pathogenesis.
  5. What are coenocytic mycelia? Write names of different types of hypha present in Rhizopus mycelium.
  6. What is peridiole ? Where does it occur?
  7. Write in brief the types of vegetative bodies of lichen.
  8. Describe, with an example, types of zoospores in Phycomycetes.

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