Ohio Commercial Pesticide Applicator
Certification Category 10d Vector Control
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. Which organism is considered the primary vector of West Nile
virus in Ohio?
A. House fly
B. Tick
C. Flea
D. Mosquito
*Rationale: Mosquitoes are the primary vectors for West Nile
virus, transmitting it between birds, animals, and humans.
Effective mosquito control is a central focus of Category 10d.
2. The main purpose of integrated pest management (IPM) in vector
control is to:
A. Eliminate all pests permanently
B. Rely only on chemical control
, C. Reduce vector populations using multiple compatible methods
D. Treat vectors only after disease outbreaks
*Rationale: IPM emphasizes prevention, monitoring, biological,
physical, and chemical controls to manage vectors effectively while
minimizing risks.
3. Which life stage of the mosquito is most effectively controlled
with larvicides?
A. Egg
B. Larva
C. Pupa
D. Adult
*Rationale: Larvicides target immature mosquitoes in water
before they emerge as flying adults capable of disease
transmission.
4. Standing water that produces mosquitoes but serves no beneficial
purpose is best described as:
A. Natural habitat
B. Protected wetland
C. Unnecessary water source
D. Biological reservoir
, *Rationale: Removing unnecessary standing water is a key non-
chemical control method in mosquito management.
5. Which disease is commonly associated with ticks in Ohio?
A. Malaria
B. Plague
C. Lyme disease
D. Yellow fever
*Rationale: Lyme disease is transmitted by blacklegged ticks and is
a significant tick-borne illness in Ohio.
6. The most effective time to apply adult mosquito control measures
is:
A. Midday
B. When adult populations exceed action thresholds
C. Immediately after rainfall
D. During winter months
*Rationale: Adult control should be based on surveillance data and
action thresholds rather than routine or calendar-based spraying.
7. Which vector is primarily responsible for transmitting plague?
A. Mosquito
B. Tick
C. Flea
, D. Louse
*Rationale: Plague is transmitted by fleas, particularly those
associated with rodents.
8. A key advantage of larval mosquito control compared to adult
control is that it:
A. Is more expensive
B. Targets mosquitoes before they can spread disease
C. Requires daily applications
D. Only works indoors
*Rationale: Larval control prevents mosquitoes from reaching the
adult stage, reducing disease risk more efficiently.
9. Which rodent is most commonly associated with urban vector
problems?
A. Meadow vole
B. Deer mouse
C. Norway rat
D. Chipmunk
*Rationale: Norway rats thrive in urban environments and are
significant vectors for disease and contamination.
10. Surveillance in vector control programs is primarily used to:
A. Eliminate pesticide use
Certification Category 10d Vector Control
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. Which organism is considered the primary vector of West Nile
virus in Ohio?
A. House fly
B. Tick
C. Flea
D. Mosquito
*Rationale: Mosquitoes are the primary vectors for West Nile
virus, transmitting it between birds, animals, and humans.
Effective mosquito control is a central focus of Category 10d.
2. The main purpose of integrated pest management (IPM) in vector
control is to:
A. Eliminate all pests permanently
B. Rely only on chemical control
, C. Reduce vector populations using multiple compatible methods
D. Treat vectors only after disease outbreaks
*Rationale: IPM emphasizes prevention, monitoring, biological,
physical, and chemical controls to manage vectors effectively while
minimizing risks.
3. Which life stage of the mosquito is most effectively controlled
with larvicides?
A. Egg
B. Larva
C. Pupa
D. Adult
*Rationale: Larvicides target immature mosquitoes in water
before they emerge as flying adults capable of disease
transmission.
4. Standing water that produces mosquitoes but serves no beneficial
purpose is best described as:
A. Natural habitat
B. Protected wetland
C. Unnecessary water source
D. Biological reservoir
, *Rationale: Removing unnecessary standing water is a key non-
chemical control method in mosquito management.
5. Which disease is commonly associated with ticks in Ohio?
A. Malaria
B. Plague
C. Lyme disease
D. Yellow fever
*Rationale: Lyme disease is transmitted by blacklegged ticks and is
a significant tick-borne illness in Ohio.
6. The most effective time to apply adult mosquito control measures
is:
A. Midday
B. When adult populations exceed action thresholds
C. Immediately after rainfall
D. During winter months
*Rationale: Adult control should be based on surveillance data and
action thresholds rather than routine or calendar-based spraying.
7. Which vector is primarily responsible for transmitting plague?
A. Mosquito
B. Tick
C. Flea
, D. Louse
*Rationale: Plague is transmitted by fleas, particularly those
associated with rodents.
8. A key advantage of larval mosquito control compared to adult
control is that it:
A. Is more expensive
B. Targets mosquitoes before they can spread disease
C. Requires daily applications
D. Only works indoors
*Rationale: Larval control prevents mosquitoes from reaching the
adult stage, reducing disease risk more efficiently.
9. Which rodent is most commonly associated with urban vector
problems?
A. Meadow vole
B. Deer mouse
C. Norway rat
D. Chipmunk
*Rationale: Norway rats thrive in urban environments and are
significant vectors for disease and contamination.
10. Surveillance in vector control programs is primarily used to:
A. Eliminate pesticide use
