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 (A)</p> Signup and view all the answers

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

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

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

<p>Coccidioidomycosis (B)</p> Signup and view all the answers

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

<p>True pathogens (A)</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 (D)</p> Signup and view all the answers

What is the most common symptom of Coccidioidomycosis?

<p>Fever (C)</p> Signup and view all the answers

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

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

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

<p>Algae (B)</p> Signup and view all the answers

What is the typical habitat for oomycetes?

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

What type of pathogens are oomycetes?

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

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

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

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

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

How do biotrophic oomycete pathogens infect their hosts?

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

What is the function of haustoria in oomycete pathogens?

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

How quickly can Puccinia graminis infected wheat produce spores?

<p>6-10 days (D)</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 (D)</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 (A)</p> Signup and view all the answers

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