Diseases Flashcards
What is a plant disease?
A plant disease is a condition that adversely affects the normal functioning of a plant, resulting in reduced growth, yield, or quality.
Name two major causes of plant diseases.
Fungi and bacteria.
True or False: Viruses can cause plant diseases.
True.
What are symptoms of plant diseases?
Symptoms include wilting, discoloration, stunted growth, and abnormal growths.
Fill in the blank: Plant diseases can be caused by _______.
pathogens, environmental factors, and nutritional deficiencies.
What is the primary method of transmission for bacterial diseases in plants?
Water, insects, and contaminated tools.
Name a common fungal disease of crops.
Powdery mildew.
What type of pathogen is downy mildew?
Fungus.
Which crop is commonly affected by rust diseases?
Wheat.
True or False: Environmental conditions play no role in the development of plant diseases.
False.
What are nematodes?
Microscopic worms that can cause diseases in plants.
Multiple Choice: Which of the following is a viral disease? A) Blight B) Mosaic C) Wilt
B) Mosaic.
What is the role of insects in plant disease transmission?
Insects can act as vectors, spreading pathogens from infected to healthy plants.
Name one method of controlling plant diseases.
Crop rotation.
What is a symptom of root rot?
Wilting and yellowing of leaves.
True or False: Plant diseases can only be caused by living organisms.
False.
What is the term for a disease that spreads quickly among plants?
Epidemic.
Fill in the blank: Fungal diseases often spread through _______.
spores.
What is the significance of identifying plant disease symptoms early?
Early identification allows for timely intervention and management.
What type of crop is often affected by late blight?
Potatoes.
Name a method of disease prevention in plants.
Using disease-resistant varieties.
What is the impact of plant diseases on agriculture?
They can lead to reduced crop yields and economic losses.
True or False: Soil quality does not influence the occurrence of plant diseases.
False.
What is a common sign of a viral infection in plants?
Mosaic patterns on leaves.
