Stimulation Of Plant Defenses: Quiz 1

12 Questions | Total Attempts: 461

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Plant Quizzes & Trivia

Questions and Answers
  • 1. 
    If you were a plant pathogen, what would be the first obstacle to invading a host plant that you would have to overcome?
    • A. 

      Chemical toxins on the surface of a plant

    • B. 

      Physical barriers on the exterior of a plant

    • C. 

      Physical barriers on the exterior of a plant

    • D. 

      Immune proteins in the plant tissue

  • 2. 
    Fungal pathogens can enter their host by means of  :
    • A. 

      Enzymes (cutinases)

    • B. 

      Mechanical Force (appresoria)

    • C. 

      Wounds, stomatal pores

    • D. 

      All of the above

  • 3. 
     A plant pathogen is called:
    • A. 

      Necrotrophic when it kills the cells of the host plant.

    • B. 

      Biotrophic when plant cells are killed

    • C. 

      Hemibiotrophic when plant cells remain alive throughout the infection

    • D. 

      Virulent

  • 4. 
     Both plant and animal immune systems can
    • A. 

      Develop memory of past pathogens to more effectively deal with subsequent infections

    • B. 

      Establish physical barriers to infection

    • C. 

      Release molecules to fend off pathogen

    • D. 

      All of these are true

  • 5. 
    A plant lacking secondary metabolites would likely
    • A. 

      Be unable to carry out photosynthesis

    • B. 

      Be susceptible to infection by pathogens

    • C. 

      Be resistant to predation by herbivores.

    • D. 

      Paralyze animals who ingested it

  • 6. 
    Terpenes can be found in
    • A. 

      Lignin

    • B. 

      Chlorophyll a

    • C. 

      Glucosinates

    • D. 

      Nicotine

  • 7. 
    Whatever the kind of defense or resistance a host plant employs against a pathogen it is ultimately controlled, directly or indirectly, by the genetic material (genes) of the pathogen
    • A. 

      True

    • B. 

      False

  • 8. 
    Both passive and active mode of defenses include structural and chemical defenses
    • A. 

      True

    • B. 

      False

  • 9. 
    Phytoalexins are antimicrobial compounds that are synthesized from remote precursors
    • A. 

      True

    • B. 

      False

  • 10. 
    Cutin, waxes and suberins are types of secondary metabolites used in the chemical defenses
    • A. 

      True

    • B. 

      False

  • 11. 
    Non- protein amino acids are incorporated in essential proteins
    • A. 

      True

    • B. 

      False

  • 12. 
    Any type of normally pathogenic organism or virus that utilizes host resources but does not cause extensive damage or death
    • A. 

      Phytoestrogen

    • B. 

      Allelopathy

    • C. 

      Salicylic acid

    • D. 

      Avirulent pathogen

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