PCA Insects Exam Questions And Correct
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Rationales 2025/2026 Q&A | Instant
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1. Which life stage of an insect is primarily responsible for
reproduction?
A) Egg
B) Larva
C) Adult
D) Pupa
Adults are the reproductive stage capable of mating and laying
eggs.
2. Insects with complete metamorphosis have how many life
stages?
A) 2
B) 3
C) 4
D) 5
Complete metamorphosis includes egg, larva, pupa, and adult
stages.
3. Cockroaches are generally:
A) Beneficial predators
B) Omnivorous scavengers
C) Herbivores
D) Parasites
Cockroaches feed on a wide range of organic matter, including
food and waste.
4. The German cockroach can be identified by:
A) Dark brown with wings
, B) Two dark parallel stripes on the pronotum
C) Large size, over 3 inches
D) Red body color
German cockroaches have characteristic stripes behind the
head.
5. Which type of insect mouthpart is adapted for sucking blood?
A) Chewing
B) Sponging
C) Piercing-sucking
D) Lapping
Mosquitoes and some bugs have piercing-sucking mouthparts
to draw blood.
6. Which mosquito genus is primarily associated with malaria
transmission?
A) Culex
B) Aedes
C) Anopheles
D) Mansonia
Only Anopheles mosquitoes transmit malaria parasites.
7. The primary difference between lice and fleas is:
A) Lice are winged; fleas are wingless
B) Lice are host-specific and slow-moving; fleas are mobile
jumpers
C) Lice are aquatic; fleas are terrestrial
D) Lice have long legs for jumping
Lice remain on the host, whereas fleas can jump to find a host.
8. Bed bugs are:
A) Disease vectors
B) Pollinators
C) Blood-feeding parasites
D) Decomposers
, Bed bugs feed on human or animal blood but do not transmit
major diseases.
9. Ants communicate primarily through:
A) Sound
B) Visual signals
C) Pheromones
D) Touch only
Ants release chemical signals to coordinate colony behavior.
10. Which insect is known for producing silk during its larval
stage?
A) Termite
B) Beetle
C) Silkworm moth
D) Grasshopper
Silkworm caterpillars produce silk to spin cocoons.
11. Termites belong to which order?
A) Coleoptera
B) Hemiptera
C) Blattodea
D) Hymenoptera
Termites are closely related to cockroaches in Blattodea.
12. Which pest is a primary structural pest of wood?
A) German cockroach
B) Subterranean termite
C) Mosquito
D) Bed bug
Subterranean termites feed on cellulose and damage wood
structures.
13. Flea infestations can be controlled by:
A) Treating pets and living areas
B) Spraying lawns only
Answers (Verified Answers) Plus
Rationales 2025/2026 Q&A | Instant
Download Pdf
1. Which life stage of an insect is primarily responsible for
reproduction?
A) Egg
B) Larva
C) Adult
D) Pupa
Adults are the reproductive stage capable of mating and laying
eggs.
2. Insects with complete metamorphosis have how many life
stages?
A) 2
B) 3
C) 4
D) 5
Complete metamorphosis includes egg, larva, pupa, and adult
stages.
3. Cockroaches are generally:
A) Beneficial predators
B) Omnivorous scavengers
C) Herbivores
D) Parasites
Cockroaches feed on a wide range of organic matter, including
food and waste.
4. The German cockroach can be identified by:
A) Dark brown with wings
, B) Two dark parallel stripes on the pronotum
C) Large size, over 3 inches
D) Red body color
German cockroaches have characteristic stripes behind the
head.
5. Which type of insect mouthpart is adapted for sucking blood?
A) Chewing
B) Sponging
C) Piercing-sucking
D) Lapping
Mosquitoes and some bugs have piercing-sucking mouthparts
to draw blood.
6. Which mosquito genus is primarily associated with malaria
transmission?
A) Culex
B) Aedes
C) Anopheles
D) Mansonia
Only Anopheles mosquitoes transmit malaria parasites.
7. The primary difference between lice and fleas is:
A) Lice are winged; fleas are wingless
B) Lice are host-specific and slow-moving; fleas are mobile
jumpers
C) Lice are aquatic; fleas are terrestrial
D) Lice have long legs for jumping
Lice remain on the host, whereas fleas can jump to find a host.
8. Bed bugs are:
A) Disease vectors
B) Pollinators
C) Blood-feeding parasites
D) Decomposers
, Bed bugs feed on human or animal blood but do not transmit
major diseases.
9. Ants communicate primarily through:
A) Sound
B) Visual signals
C) Pheromones
D) Touch only
Ants release chemical signals to coordinate colony behavior.
10. Which insect is known for producing silk during its larval
stage?
A) Termite
B) Beetle
C) Silkworm moth
D) Grasshopper
Silkworm caterpillars produce silk to spin cocoons.
11. Termites belong to which order?
A) Coleoptera
B) Hemiptera
C) Blattodea
D) Hymenoptera
Termites are closely related to cockroaches in Blattodea.
12. Which pest is a primary structural pest of wood?
A) German cockroach
B) Subterranean termite
C) Mosquito
D) Bed bug
Subterranean termites feed on cellulose and damage wood
structures.
13. Flea infestations can be controlled by:
A) Treating pets and living areas
B) Spraying lawns only
