What is the primary focus of plant pathology?
a) Studying plant anatomy
b) Identifying plant species
c) Understanding plant diseases
d) Breeding new plant varieties
Answer: c) Understanding plant diseases
Which of the following is NOT a type of plant pathogen?
a) Virus
b) Fungus
c) Insect
d) Nematode
Answer: c) Insect
What is the term for a disease-causing agent that consists of a single-stranded RNA or DNA enclosed in a protein coat?
a) Fungus
b) Bacterium
c) Virus
d) Nematode
Answer: c) Virus
Which of the following plant diseases is caused by bacteria?
a) Powdery mildew
b) Citrus canker
c) Late blight of potato
d) Rust
Answer: b) Citrus canker
What is the primary mode of transmission for fungal diseases in plants?
a) Airborne spores
b) Soil contamination
c) Insect vectors
d) Direct contact
Answer: a) Airborne spores
Which of the following plant pathogens is a microscopic worm-like organism that feeds on plant roots?
a) Virus
b) Fungus
c) Bacterium
d) Nematode
Answer: d) Nematode
What is the term for a plant disease that affects only a specific plant species or group of related plants?
a) Endemic disease
b) Epidemic disease
c) Host-specific disease
d) Systemic disease
Answer: c) Host-specific disease
Which of the following is NOT a symptom of plant disease?
a) Wilting
b) Leaf color change
c) Photosynthesis
d) Lesions
Answer: c) Photosynthesis
What is the term for the study of the interactions between plants and disease-causing agents?
a) Botany
b) Mycology
c) Plant pathology
d) Entomology
Answer: c) Plant pathology
Which of the following plant pathogens is responsible for causing downy mildew in grapes?
a) Fungus
b) Virus
c) Bacterium
d) Nematode
Answer: a) Fungus
What is the primary purpose of plant disease management?
a) Eradicating all pathogens from the environment
b) Preventing the occurrence of all plant diseases
c) Reducing the impact of plant diseases on crop production
d) Maximizing the genetic diversity of plants
Answer: c) Reducing the impact of plant diseases on crop production
Which of the following is an example of cultural control method for managing plant diseases?
a) Using chemical pesticides
b) Planting disease-resistant varieties
c) Applying fungicides
d) Crop rotation
Answer: d) Crop rotation
What is the primary function of a quarantine measure in plant disease management?
a) Eliminating all pathogens from the environment
b) Preventing the spread of pathogens to new areas
c) Treating infected plants with pesticides
d) Enhancing plant growth and development
Answer: b) Preventing the spread of pathogens to new areas
Which of the following is NOT a chemical control method for managing plant diseases?
a) Fungicides
b) Antibiotics
c) Biological control agents
d) Herbicides
Answer: d) Herbicides
What is the term for the process of artificially introducing disease resistance genes into plants to protect them from pathogens?
a) Cultural control
b) Chemical control
c) Genetic engineering
d) Mechanical control
Answer: c) Genetic engineering
Which of the following plant pathogens is responsible for causing fire blight in apple and pear trees?
a) Fungus
b) Bacterium
c) Virus
d) Nematode
Answer: b) Bacterium
What is the term for the study of the ecological relationships between plants and their pathogens?
a) Epidemiology
b) Ecology
c) Pathogenesis
d) Phytopathology
Answer: a) Epidemiology
Which of the following plant diseases is caused by a phytoplasma?
a) Citrus greening
b) Early blight of tomato
c) Apple scab
d) Soybean rust
Answer: a) Citrus greening
What is the primary mode of transmission for viral diseases in plants?
a) Soil contamination
b) Insect vectors
c) Direct contact
d) Airborne spores
Answer: b) Insect vectors
Which of the following plant diseases is caused by a water mold?
a) Fusarium wilt
b) Phytophthora blight
c) Verticillium wilt
d) Anthracnose
Answer: b) Phytophthora blight
What is the term for a plant disease that affects an entire region or country?
a) Endemic disease
b) Epidemic disease
c) Host-specific disease
d) Systemic disease
Answer: b) Epidemic disease
Which of the following plant diseases is caused by a parasitic flowering plant?
a) Dutch elm disease
b) Dodder
c) Potato late blight
d) Wheat rust
Answer: b) Dodder
What is the primary function of integrated pest management (IPM) in plant disease management?
a) Using chemical pesticides to control pathogens
b) Maximizing crop yield through the use of fertilizers
c) Combining multiple control methods to minimize pesticide use
d) Developing genetically modified crops with built-in resistance to all pathogens
Answer: c) Combining multiple control methods to minimize pesticide use