Fungi as pathogen (Lec 8) (Set 1)
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Questions and Answers

Which of the following is a true pathogen?

  • Fungi causing systemic infections in humans (correct)
  • Fungi causing allergies
  • Fungi producing mycotoxins
  • Fungi as phytopathogens

    • What is the primary cause of disease in plants?

  • Viruses
  • Insects
  • Bacteria
  • Fungi (correct)

    • Why are human mycoses a mounting clinical problem?

  • Increasing prevalence of fungal infections
  • Limited antifungal treatments
  • Lack of understanding of fundamental fungal biology
  • All of the above (correct)

    • Which antifungal medication targets ergosterol, an essential component of fungal cell membranes?

    <p>Polyenes</p> Signup and view all the answers

    Which group of fungi attack roots and have a broad host range?

    <p>Soil-borne pathogens</p> Signup and view all the answers

    Which fungal infection is most common in alkaline desert soils of southwestern US?

    <p>Coccidioidomycosis</p> Signup and view all the answers

    Which type of fungi are adapted to high temperature and low oxygen tension?

    <p>True pathogens</p> Signup and view all the answers

    What is the major impact of emerging fungal threats mentioned in the text?

    <p>All of the above</p> Signup and view all the answers

    What is the most common symptom of Coccidioidomycosis?

    <p>Fever</p> Signup and view all the answers

    Which group of fungi are usually asymptomatic in a healthy host?

    <p>True pathogens</p> Signup and view all the answers

    Which group are oomycetes more closely related to based on biochemical and molecular analysis?

    <p>Algae</p> Signup and view all the answers

    What is the typical habitat for oomycetes?

    <p>Water-logged soils</p> Signup and view all the answers

    What type of pathogens are oomycetes?

    <p>Necrotrophic pathogens</p> Signup and view all the answers

    Which of the following is an example of a necrotrophic oomycete pathogen?

    <p>Phytophthora infestans</p> Signup and view all the answers

    What is the main difference between biotrophic and necrotrophic oomycete pathogens?

    <p>Host cell death</p> Signup and view all the answers

    How do biotrophic oomycete pathogens infect their hosts?

    <p>Through cuticle</p> Signup and view all the answers

    What is the function of haustoria in oomycete pathogens?

    <p>Nutrient source</p> Signup and view all the answers

    How quickly can Puccinia graminis infected wheat produce spores?

    <p>6-10 days</p> Signup and view all the answers

    What is the scale of the problem with Puccinia graminis infected wheat?

    <p>Trillions of spores per day</p> Signup and view all the answers

    What can be observed when rust spores infect a host plant?

    <p>Spore burst through the infection site</p> Signup and view all the answers

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