Plant Pathology Pre-class Survey

25 Questions  I  By Crlittle
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Pathology Quizzes & Trivia

  
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  • 1. 
    A definition of PLANT DISEASE should include which of the following concepts?
    • A. 

      Disruption of normal functioning.

    • B. 

      Constant irritation.

    • C. 

      Biotic agent.

    • D. 

      Abiotic agent.


  • 2. 
    Use the following symbols to determine the three corners of the DISEASE TRIANGLE: H1 = Resistant host H2 = Susceptible host P1 = Avirulent pathogen P2 = Virulent pathogen E1 = Non-conducive environment E2 = Conducive environment
    • A. 

      H1, P1, E1

    • B. 

      H2, P2, E2

    • C. 

      H1, P2, E1

    • D. 

      H2, P1, E2

    • E. 

      H1, P2, E2


  • 3. 
    Which of the following are SYMPTOMS of a plant disease?
    • A. 

      Bacterial ooze

    • B. 

      Necrosis

    • C. 

      Chlorosis

    • D. 

      Fungal structures

    • E. 

      Galls


  • 4. 
    Which of the following are SIGNS of a plant disease?
    • A. 

      Bacterial ooze

    • B. 

      Necrosis

    • C. 

      Chlorosis

    • D. 

      Fungal structures

    • E. 

      Wilting


  • 5. 
    Disease-causing agents are BIOTIC if they are:
    • A. 

      Living

    • B. 

      Non-living

    • C. 

      Environmental stressors

    • D. 

      Nutrient stressors

    • E. 

      Herbivores


  • 6. 
    Place the following plant pathogens in correct relative SIZE (from smallest to largest): (N = Nematode, V = Viruses, B = Bacteria, F = Fungi, P = Parasitic plants)
    • A. 

      N, V, B, F, P

    • B. 

      F, V, N, B, P

    • C. 

      B, V, F, N, P

    • D. 

      V, B, F, N, P


  • 7. 
    How do FUNGI infect plants?
    • A. 

      Wounds

    • B. 

      Direct penetration

    • C. 

      Natural openings

    • D. 

      Vectors


  • 8. 
    What is a HAUSTORIUM?
    • A. 

      The body of a parasite.

    • B. 

      A feeding structure.

    • C. 

      A penetration apparatus.

    • D. 

      A symptom seen on plants.

    • E. 

      A junction between plant cells.


  • 9. 
    How do BACTERIA infect plants?
    • A. 

      Wounds

    • B. 

      Direct penetration

    • C. 

      Natural openings

    • D. 

      Vectors


  • 10. 
    How do VIRUSES infect plants?
    • A. 

      Wounds

    • B. 

      Direct penetration

    • C. 

      Natural openings

    • D. 

      Vectors


  • 11. 
    How can fungi and bacteria be DISSEMINATED from one place to another?
    • A. 

      Wind

    • B. 

      Water

    • C. 

      Infected plant material

    • D. 

      Infested farm equipment

    • E. 

      In or on seeds


  • 12. 
    How do NEMATODES infect plants?
    • A. 

      Wounds

    • B. 

      Direct penetration

    • C. 

      Natural openings

    • D. 

      Vectors


  • 13. 
    What type of pathogen INOCULUM survives dormant in winter or summer and causes the original infections in the spring or autumn?
    • A. 

      Primary

    • B. 

      Secondary

    • C. 

      Tertiary

    • D. 

      Repeating spore stage


  • 14. 
    How can facultative fungi and bacteria SURVIVE in between cropping cycles?
    • A. 

      Crop residue

    • B. 

      Soil

    • C. 

      Within vectors

    • D. 

      Sclerotia

    • E. 

      Reservoir hosts


  • 15. 
    OBLIGATE BIOTROPHS are pathogens that:
    • A. 

      Grow in a living plant.

    • B. 

      Grow in artificial culture.

    • C. 

      Do not require oxygen.

    • D. 

      Grow in the soil.


  • 16. 
    Which of the following is an example of a POLYCYCLIC  disease?
    • A. 

      Soybean cyst

    • B. 

      Charcoal rot

    • C. 

      Wheat stem rust

    • D. 

      Corn smut

    • E. 

      Cedar-apple rust


  • 17. 
    Which are examples of HORIZONTAL RESISTANCE?
    • A. 

      Quantitative resistance

    • B. 

      Single-gene resistance

    • C. 

      Race-specific resistance

    • D. 

      Polygenic resistance


  • 18. 
    Use the symbols to determine which interaction illustrates the GENE-FOR-GENE concept: R1/r1 = Resistance gene 1 (host) R2/r2 = Resistance gene 2 (host) Avr1/avr1 = Avirulence gene 1 (pathogen) Avr2/avr2 = Avirulence gene 2 (pathogen)
    • A. 

      R1: Avr 2

    • B. 

      R1: avr1

    • C. 

      R1: Avr1

    • D. 

      R2: Avr1

    • E. 

      R2: Avr1


  • 19. 
    Most plant virus GENOMES are composed of __________ and can therefore function as mRNA as soon as they are uncoated in the plant cell.
    • A. 

      Double-stranded DNA

    • B. 

      Single-stranded DNA

    • C. 

      Single-stranded RNA

    • D. 

      TRNA


  • 20. 
    Indicate the PLANT DISEASE MANAGEMENT strategies appropriate for VIRAL DISEASES.
    • A. 

      Resistance (host genetics)

    • B. 

      Eradication (eliminate pathogen)

    • C. 

      Protection (chemicals)

    • D. 

      Exclusion (quarantines)

    • E. 

      Avoidance (unfavorable conditions)

    • F. 

      Therapy (curative injections)


  • 21. 
    Indicate the PLANT DISEASE MANAGEMENT strategies appropriate for BACTERIAL DISEASES.
    • A. 

      Resistance (host genetics)

    • B. 

      Eradication (eliminate pathogen)

    • C. 

      Protection (chemicals)

    • D. 

      Exclusion (quarantines)

    • E. 

      Avoidance (unfavorable conditions)

    • F. 

      Therapy (curative injections)


  • 22. 
    Indicate the PLANT DISEASE MANAGEMENT strategies appropriate for FUNGAL DISEASES.
    • A. 

      Resistance (host genetics)

    • B. 

      Eradication (eliminate pathogen)

    • C. 

      Protection (chemicals)

    • D. 

      Exclusion (quarantines)

    • E. 

      Avoidance (unfavorable conditions)

    • F. 

      Therapy (curative injections)


  • 23. 
    Indicate the PLANT DISEASE MANAGEMENT strategies appropriate for NEMATODE DISEASES.
    • A. 

      Resistance (host genetics)

    • B. 

      Eradication (eliminate pathogen)

    • C. 

      Protection (chemicals)

    • D. 

      Exclusion (quarantines)

    • E. 

      Avoidance (unfavorable conditions)

    • F. 

      Therapy (curative injections)


  • 24. 
    Match the following Kansas diseases (left) with the type of causal agent (left).
    • A. Virus
    • A.
    • B. Bacterium
    • B.
    • C. Fungus
    • C.
    • D. Nematode
    • D.
    • E. Parasitic plant
    • E.

  • 25. 
    Match the following Kansas diseases (left) with the type of causal agent (left).
    • A. Virus
    • A.
    • B. Bacterium
    • B.
    • C. Fungus
    • C.
    • D. Nematode
    • D.
    • E. Parasitic plant
    • E.

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