Lesson 4.1.1a
4.1.1a Pathogens and plant defences Quiz: OCR Biology, Unit 3
20 questions
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Lesson 4.1.1a, Pathogens and plant defences: 20 multiple choice questions for the OCR Biology (H020), Unit 3: Communicable diseases, disease prevention and the immune system, written with Revision Ninja.
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The 20 questions
-
Which group of pathogens includes the cause of tuberculosis?
- Bacteria
- Viruses
- Fungi
- Protoctista
-
Which type of pathogen causes HIV/AIDS in humans?
- A virus
- A protoctist
- A bacterium
- A fungus
-
Malaria is caused by which type of pathogen?
- A filamentous fungus
- A protoctist
- A prokaryotic bacterium
- A virus particle
-
Athlete's foot is caused by which type of pathogen?
- A virus
- A bacterium
- A fungus
- A protoctist
-
Which of these plant diseases is caused by a virus?
- Late blight
- Ring rot
- Black sigatoka
- Tobacco mosaic virus
-
Which kingdom of pathogen causes potato and tomato late blight?
- Bacteria
- Protoctista
- Fungi
- Viruses
-
Which polysaccharide is deposited at infected sites to limit pathogen spread in plants?
- Cellulose
- Suberin
- Callose
- Lignin
-
What type of plant defence mechanism involves producing antimicrobial molecules like saponins?
- Mechanical defence
- Physical defence
- Chemical defence
- Passive defence
-
What term describes an organism that carries a pathogen from one host to another?
- Parasite
- Vector
- Fomite
- Reservoir
-
Which environmental condition most strongly promotes the spread of potato late blight spores?
- High humidity
- Direct sunlight
- High temperature
- Low humidity
-
What is the primary method of airborne transmission for fungal pathogens between plants?
- Insect vectors
- Windborne spores
- Soil transfer
- Direct contact
-
Which pathogen type causes tuberculosis in humans and cattle?
- Bacterium
- Virus
- Protoctist
- Fungus
-
To which group of cellular organisms does the potato ring rot pathogen belong?
- Eukaryotes
- Protoctists
- Prokaryotes
- Viruses
-
Where is callose primarily deposited to block pathogen transport between adjacent plant cells?
- Stomata
- Chloroplasts
- Plasmodesmata
- Mitochondria
-
Where do plant viruses replicate, making chemical treatment difficult without harming the host?
- On leaf surface
- Within xylem sap
- Inside host cells
- In leaf cuticle
-
What advantage do windborne spores provide to plant pathogens?
- Vector independence
- Thermal resistance
- Host specificity
- Long-distance dispersal
-
Which agricultural practice increases disease risk due to low genetic diversity among crops?
- Crop rotation
- Polyculture
- Selective breeding
- Monoculture
-
Which factor most increases the transmission rate of a communicable disease in a population?
- Low population density
- Cold dry conditions
- High antibody levels
- High population density
-
Callose deposition in plant cell walls is an example of which type of defence response?
- Non-specific response
- Specific immune response
- Adaptive immune response
- Cell-mediated response
-
How does a prolonged dry period affect the spread of a vector-borne plant disease?
- Transmission remains constant
- Transmission increases
- Vectors multiply rapidly
- Transmission decreases
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