Question

Which of the following statements correctly differentiates attractants and repellents?

1. Attractants are substances that repel insect pests from treated plants.
2. Repellents are substances designed to deter insect pests from a treated plant.
3. Attractants are used to control plant diseases caused by bacteria.

• A. 1 only
• B. 2 only
• C. All
• D. 1, 3

Answer 1

Answer:

B. 2 only

• Repellents: Substances that repel the insect pest from a treated plant.

• Acaricides: Substances that are used to control mites on crops / animals

• Eg: Dicofol

• Avicides: Substances that are used to repel the birds

• Eg: Anthraquionone

• Bactericide: Substances that are used to control the plant diseases caused by bacteria

• Eg: Streptomycin sulphate