Washington Category 4 — Seed
Treatment Pest Control Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the primary purpose of seed treatment pesticides?
A. To increase plant height
B. To protect seeds and seedlings from pests and diseases
C. To fertilize the soil
D. To repel birds only
Answer: B
Rationale: Seed treatments are applied to seeds to protect them
from soil-borne insects, fungi, and early-season pests that can
damage germinating plants.
2. Which pest is most commonly targeted by seed treatments in field
crops?
A. Birds
, B. Rodents
C. Soil-borne fungi
D. Deer
Answer: C
Rationale: Seed treatments are especially effective against soil-borne
fungal pathogens that infect seeds during germination.
3. Which of the following is a systemic seed treatment pesticide
characteristic?
A. It stays only on the seed surface
B. It evaporates quickly
C. It is absorbed and moves within the plant
D. It only kills weeds
Answer: C
Rationale: Systemic pesticides are absorbed by the seed and
translocated within the growing plant for internal protection.
4. What is a key advantage of seed treatments compared to foliar
sprays?
A. Higher labor cost
B. Reduced environmental exposure
C. Immediate weed control
D. No need for labeling
Answer: B
, Rationale: Seed treatments reduce pesticide exposure to the
environment since the chemical is applied in a confined manner.
5. Which pest group includes wireworms affecting treated seeds?
A. Fungi
B. Insects
C. Weeds
D. Birds
Answer: B
Rationale: Wireworms are soil-dwelling insect larvae that damage
seeds and seedlings.
6. What is a major risk of improper seed treatment application?
A. Increased photosynthesis
B. Crop overgrowth
C. Toxicity to humans and wildlife
D. Reduced soil moisture
Answer: C
Rationale: Misapplication can lead to pesticide exposure risks to
applicators, wildlife, and non-target organisms.
7. Which protective equipment is essential when handling seed
treatment chemicals?
A. Sunglasses
B. Respirator and gloves
C. Shorts and sandals
, D. Cotton hat only
Answer: B
Rationale: PPE such as gloves and respirators help prevent pesticide
exposure during handling and application.
8. Seed treatment pesticides are typically applied:
A. After crop harvest
B. Before planting
C. During flowering
D. After irrigation
Answer: B
Rationale: Seed treatments are applied before planting to protect
seeds during germination and early growth.
9. What is a common formulation used in seed treatments?
A. Granules only
B. Dusts and liquid concentrates
C. Aerosols only
D. Gas fumigants only
Answer: B
Rationale: Seed treatments commonly use dust or liquid formulations
that coat seeds evenly.
10. Which principle is MOST important when calibrating seed
treatment equipment?
A. Color of seeds
Treatment Pest Control Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the primary purpose of seed treatment pesticides?
A. To increase plant height
B. To protect seeds and seedlings from pests and diseases
C. To fertilize the soil
D. To repel birds only
Answer: B
Rationale: Seed treatments are applied to seeds to protect them
from soil-borne insects, fungi, and early-season pests that can
damage germinating plants.
2. Which pest is most commonly targeted by seed treatments in field
crops?
A. Birds
, B. Rodents
C. Soil-borne fungi
D. Deer
Answer: C
Rationale: Seed treatments are especially effective against soil-borne
fungal pathogens that infect seeds during germination.
3. Which of the following is a systemic seed treatment pesticide
characteristic?
A. It stays only on the seed surface
B. It evaporates quickly
C. It is absorbed and moves within the plant
D. It only kills weeds
Answer: C
Rationale: Systemic pesticides are absorbed by the seed and
translocated within the growing plant for internal protection.
4. What is a key advantage of seed treatments compared to foliar
sprays?
A. Higher labor cost
B. Reduced environmental exposure
C. Immediate weed control
D. No need for labeling
Answer: B
, Rationale: Seed treatments reduce pesticide exposure to the
environment since the chemical is applied in a confined manner.
5. Which pest group includes wireworms affecting treated seeds?
A. Fungi
B. Insects
C. Weeds
D. Birds
Answer: B
Rationale: Wireworms are soil-dwelling insect larvae that damage
seeds and seedlings.
6. What is a major risk of improper seed treatment application?
A. Increased photosynthesis
B. Crop overgrowth
C. Toxicity to humans and wildlife
D. Reduced soil moisture
Answer: C
Rationale: Misapplication can lead to pesticide exposure risks to
applicators, wildlife, and non-target organisms.
7. Which protective equipment is essential when handling seed
treatment chemicals?
A. Sunglasses
B. Respirator and gloves
C. Shorts and sandals
, D. Cotton hat only
Answer: B
Rationale: PPE such as gloves and respirators help prevent pesticide
exposure during handling and application.
8. Seed treatment pesticides are typically applied:
A. After crop harvest
B. Before planting
C. During flowering
D. After irrigation
Answer: B
Rationale: Seed treatments are applied before planting to protect
seeds during germination and early growth.
9. What is a common formulation used in seed treatments?
A. Granules only
B. Dusts and liquid concentrates
C. Aerosols only
D. Gas fumigants only
Answer: B
Rationale: Seed treatments commonly use dust or liquid formulations
that coat seeds evenly.
10. Which principle is MOST important when calibrating seed
treatment equipment?
A. Color of seeds
