Disease Management Pretest

What is a common symptom of plant diseases caused by fungi?

• Yellowing of leaves

• Growth of mushrooms on plant roots

• White, powdery spots on leaves and stems

• Increased fruit production

Which of the following is NOT a common plant disease?

• Powdery mildew

• Black spot

• Root rot

• Leaf enlargement

What is a biological method to control plant diseases?

• Using chemical fungicides

• Introducing beneficial insects that eat disease-causing pests

• Increasing the soil pH with lime

• Removing affected plant parts and burning them

Which of the following is a chemical method to manage plant diseases?

• Crop rotation

• Application of neem oil

• Planting disease-resistant varieties

• Mulching

How does crop rotation help in managing plant diseases?

• By killing insects that spread diseases

• By changing the pH of the soil

• By reducing the buildup of disease-causing organisms in the soil

• By increasing the nutrient content in the soil

What is a common sign of bacterial plant disease?

• Brittle leaves

• Wilting even with adequate water

• Dark, sunken spots on stems and fruits

• Bright, colorful flowers

Why is removing and destroying infected plant parts a recommended practice for managing plant diseases?

• It increases air circulation.

• It adds nutrients to the soil.

• It prevents the spread of disease to healthy parts.

• It attracts beneficial insects.

Which of the following is NOT a benefit of using resistant plant varieties for disease management?

• Reduced need for chemical treatments

• Complete elimination of the disease

• Lower environmental impact

• Reduced cost in managing diseases