Plant Pathology Terminology Quiz
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Questions and Answers

What term is used to describe different symptoms exhibited by a plant?

  • Syndrome (correct)
  • Leaf spot
  • Primary symptoms
  • Secondary symptoms
  • Which type of symptoms are the immediate and direct results of the causal agent's activities on the invaded tissues?

  • Leaf spot
  • Syndrome
  • Secondary symptoms
  • Primary symptoms (correct)
  • What is the term used to describe the effects on distant and uninvaded plant parts?

  • Secondary symptoms (correct)
  • Primary symptoms
  • Syndrome
  • Leaf rust
  • Which principle states that for a microorganism to be considered the cause of a disease, it must be isolated from a diseased plant and grown in pure culture?

    <p>Koch’s postulates</p> Signup and view all the answers

    What is the term for an indication by a plant of a pathologic condition that distinguishes a particular disease from others?

    <p>Symptom complex</p> Signup and view all the answers

    In plant pathology, what are different symptoms exhibited by a plant collectively called?

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

    Why is diagnosis based on symptoms alone not reliable?

    <p>Different diseases may show similar symptoms.</p> Signup and view all the answers

    What is the significance of bacterial ooze in plant disease diagnosis?

    <p>It is a unique sign that indicates a specific disease.</p> Signup and view all the answers

    Which term best describes the process of diagnosing plant diseases based on characteristic symptoms and signs?

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

    Why is it important to accurately diagnose plant diseases?

    <p>For plant disease control</p> Signup and view all the answers

    What makes tomato wilting a symptom in plant disease diagnosis?

    <p>It is a visual characteristic observed in plants affected by certain diseases.</p> Signup and view all the answers

    How do Koch's postulates contribute to plant disease diagnosis?

    <p>By establishing a set of criteria to link a particular pathogen with a specific disease</p> Signup and view all the answers

    What is the relationship between symptom and sign in plant disease diagnosis?

    <p>The presence of symptoms and signs together leads to a more reliable diagnosis.</p> Signup and view all the answers

    Why is it important to recognize secondary invaders or saprophytes in plant disease diagnosis?

    <p>They can be mistaken as the primary agents, affecting the accuracy of diagnosis.</p> Signup and view all the answers

    Which of the following is an example of a plant disease caused by a protist?

    <p>Clubroot of cabbage caused by Plasmodiophora brassicae</p> Signup and view all the answers

    Why can the diagnosis of plant diseases be complicated by secondary invaders or saprophytes?

    <p>Saprophytes may be mistaken as primary agents, leading to misdiagnosis.</p> Signup and view all the answers

    In plant pathology, what does Koch's postulates refer to?

    <p>A set of guidelines to determine the cause of an infectious disease.</p> Signup and view all the answers

    How does the presence of signs contribute to the reliability of plant disease diagnosis?

    <p>Signs indicate the presence of pathogens while symptoms do not.</p> Signup and view all the answers

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