Mosquito Control Applicator Certification
Exam Practice Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. Which stage of the mosquito life cycle is aquatic and non-feeding?
A. Egg
B. Larva
C. Pupa
D. Adult
Rationale: Pupae are aquatic and non-feeding; this is the stage
between larva and adult.
2. The primary purpose of larviciding is to:
A. Kill adult mosquitoes
B. Attract mosquitoes
C. Prevent larvae from maturing into adults
D. Sterilize adult mosquitoes
, Rationale: Larviciding targets immature stages to reduce adult
populations before emergence.
3. Which mosquito genus is the primary vector for malaria?
A. Aedes
B. Anopheles
C. Culex
D. Psorophora
Rationale: Anopheles mosquitoes are the primary vectors of malaria
worldwide.
4. The technique of applying insecticides in a fine mist to kill adult
mosquitoes is called:
A. Larviciding
B. Biological control
C. ULV (Ultra-Low Volume) spraying
D. Fumigation
Rationale: ULV spraying produces small droplets that remain
airborne to contact adult mosquitoes.
5. Which environmental factor most affects mosquito breeding site
selection?
A. Light intensity
B. Water availability
C. Soil type
D. Wind speed
, Rationale: Mosquitoes require standing water for egg-laying and
larval development.
6. Adulticide applications are most effective when:
A. The wind is strong
B. Mosquitoes are in sheltered areas
C. Mosquitoes are actively flying
D. It is raining
Rationale: Adulticides must contact flying mosquitoes to be effective.
7. Which of the following is a natural predator of mosquito larvae?
A. Dragonfly nymphs
B. Fish (e.g., Gambusia)
C. Mosquito pupae
D. Adult butterflies
Rationale: Certain fish species consume mosquito larvae and are
used in biological control.
8. The use of Bacillus thuringiensis israelensis (Bti) targets which
mosquito stage?
A. Egg
B. Larva
C. Pupa
D. Adult
Rationale: Bti produces toxins that specifically kill mosquito larvae.
, 9. Which mosquito species is a primary vector of Zika virus?
A. Culex pipiens
B. Aedes aegypti
C. Anopheles gambiae
D. Psorophora columbiae
Rationale: Aedes aegypti is the main vector of Zika, dengue, and
yellow fever viruses.
10. Mosquito eggs can survive desiccation for months in:
A. Standing water
B. Dry container habitats
C. Flowing streams
D. Saltwater only
Rationale: Aedes species lay drought-resistant eggs on moist
surfaces, which hatch when flooded.
11. Which is the most common chemical class used for adult
mosquito control?
A. Organophosphates
B. Pyrethroids
C. Neonicotinoids
D. Carbamates
Rationale: Pyrethroids are widely used for their quick knockdown
effect and low mammalian toxicity.
Exam Practice Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. Which stage of the mosquito life cycle is aquatic and non-feeding?
A. Egg
B. Larva
C. Pupa
D. Adult
Rationale: Pupae are aquatic and non-feeding; this is the stage
between larva and adult.
2. The primary purpose of larviciding is to:
A. Kill adult mosquitoes
B. Attract mosquitoes
C. Prevent larvae from maturing into adults
D. Sterilize adult mosquitoes
, Rationale: Larviciding targets immature stages to reduce adult
populations before emergence.
3. Which mosquito genus is the primary vector for malaria?
A. Aedes
B. Anopheles
C. Culex
D. Psorophora
Rationale: Anopheles mosquitoes are the primary vectors of malaria
worldwide.
4. The technique of applying insecticides in a fine mist to kill adult
mosquitoes is called:
A. Larviciding
B. Biological control
C. ULV (Ultra-Low Volume) spraying
D. Fumigation
Rationale: ULV spraying produces small droplets that remain
airborne to contact adult mosquitoes.
5. Which environmental factor most affects mosquito breeding site
selection?
A. Light intensity
B. Water availability
C. Soil type
D. Wind speed
, Rationale: Mosquitoes require standing water for egg-laying and
larval development.
6. Adulticide applications are most effective when:
A. The wind is strong
B. Mosquitoes are in sheltered areas
C. Mosquitoes are actively flying
D. It is raining
Rationale: Adulticides must contact flying mosquitoes to be effective.
7. Which of the following is a natural predator of mosquito larvae?
A. Dragonfly nymphs
B. Fish (e.g., Gambusia)
C. Mosquito pupae
D. Adult butterflies
Rationale: Certain fish species consume mosquito larvae and are
used in biological control.
8. The use of Bacillus thuringiensis israelensis (Bti) targets which
mosquito stage?
A. Egg
B. Larva
C. Pupa
D. Adult
Rationale: Bti produces toxins that specifically kill mosquito larvae.
, 9. Which mosquito species is a primary vector of Zika virus?
A. Culex pipiens
B. Aedes aegypti
C. Anopheles gambiae
D. Psorophora columbiae
Rationale: Aedes aegypti is the main vector of Zika, dengue, and
yellow fever viruses.
10. Mosquito eggs can survive desiccation for months in:
A. Standing water
B. Dry container habitats
C. Flowing streams
D. Saltwater only
Rationale: Aedes species lay drought-resistant eggs on moist
surfaces, which hatch when flooded.
11. Which is the most common chemical class used for adult
mosquito control?
A. Organophosphates
B. Pyrethroids
C. Neonicotinoids
D. Carbamates
Rationale: Pyrethroids are widely used for their quick knockdown
effect and low mammalian toxicity.
