Entomology Certification Examination
Questions and Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Entomology is the scientific study of:
A. Fungi
B. Birds
C. Insects
D. Fish
Answer: C. Insects
Rationale: Entomology is the branch of zoology devoted to the study of insects.
2. Insects belong to the phylum:
A. Mollusca
B. Chordata
C. Annelida
D. Arthropoda
Answer: D. Arthropoda
Rationale: Insects are arthropods characterized by jointed appendages and an
external skeleton.
3. Adult insects have how many pairs of legs?
A. Two
B. Four
,C. Five
D. Three
Answer: D. Three
Rationale: Adult insects possess six legs arranged as three pairs attached to the
thorax.
4. The insect body is divided into:
A. Head and abdomen only
B. Cephalothorax and abdomen
C. Head, thorax, and abdomen
D. Thorax and tail
Answer: C. Head, thorax, and abdomen
Rationale: The insect body consists of three distinct regions.
5. Insects possess:
A. Internal skeleton
B. Exoskeleton made primarily of chitin
C. Cartilage skeleton
D. Bone skeleton
Answer: B. Exoskeleton made primarily of chitin
Rationale: Chitin provides structural support and protection.
6. The head of an insect primarily contains:
A. Wings and legs
B. Eyes, antennae, and mouthparts
C. Spiracles only
D. Reproductive organs
Answer: B. Eyes, antennae, and mouthparts
,Rationale: The head houses sensory organs and feeding structures.
7. The thorax is the region that bears:
A. Digestive organs only
B. Antennae only
C. Legs and wings
D. Reproductive organs only
Answer: C. Legs and wings
Rationale: The thorax is specialized for movement.
8. The abdomen primarily contains:
A. Brain only
B. Compound eyes
C. Digestive and reproductive organs
D. Antennae
Answer: C. Digestive and reproductive organs
Rationale: Most internal organs are located in the abdomen.
9. The insect exoskeleton functions primarily to:
A. Produce blood cells
B. Provide protection and support
C. Digest food
D. Store oxygen
Answer: B. Provide protection and support
Rationale: The exoskeleton protects tissues and prevents water loss.
10. Insects grow by:
, A. Binary fission
B. Molting (ecdysis)
C. Budding
D. Fragmentation
Answer: B. Molting (ecdysis)
Rationale: Because the exoskeleton is rigid, insects must shed it to grow.
11. Molting is controlled primarily by:
A. Insulin
B. Thyroxine
C. Ecdysone
D. Cortisol
Answer: C. Ecdysone
Rationale: Ecdysone is the principal molting hormone in insects.
12. Compound eyes are specialized for:
A. Hearing
B. Smell
C. Vision
D. Taste
Answer: C. Vision
Rationale: Compound eyes detect movement and provide a wide field of view.
13. Simple eyes in insects are called:
A. Spiracles
B. Cerci
C. Ocelli
D. Palps
Questions and Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Entomology is the scientific study of:
A. Fungi
B. Birds
C. Insects
D. Fish
Answer: C. Insects
Rationale: Entomology is the branch of zoology devoted to the study of insects.
2. Insects belong to the phylum:
A. Mollusca
B. Chordata
C. Annelida
D. Arthropoda
Answer: D. Arthropoda
Rationale: Insects are arthropods characterized by jointed appendages and an
external skeleton.
3. Adult insects have how many pairs of legs?
A. Two
B. Four
,C. Five
D. Three
Answer: D. Three
Rationale: Adult insects possess six legs arranged as three pairs attached to the
thorax.
4. The insect body is divided into:
A. Head and abdomen only
B. Cephalothorax and abdomen
C. Head, thorax, and abdomen
D. Thorax and tail
Answer: C. Head, thorax, and abdomen
Rationale: The insect body consists of three distinct regions.
5. Insects possess:
A. Internal skeleton
B. Exoskeleton made primarily of chitin
C. Cartilage skeleton
D. Bone skeleton
Answer: B. Exoskeleton made primarily of chitin
Rationale: Chitin provides structural support and protection.
6. The head of an insect primarily contains:
A. Wings and legs
B. Eyes, antennae, and mouthparts
C. Spiracles only
D. Reproductive organs
Answer: B. Eyes, antennae, and mouthparts
,Rationale: The head houses sensory organs and feeding structures.
7. The thorax is the region that bears:
A. Digestive organs only
B. Antennae only
C. Legs and wings
D. Reproductive organs only
Answer: C. Legs and wings
Rationale: The thorax is specialized for movement.
8. The abdomen primarily contains:
A. Brain only
B. Compound eyes
C. Digestive and reproductive organs
D. Antennae
Answer: C. Digestive and reproductive organs
Rationale: Most internal organs are located in the abdomen.
9. The insect exoskeleton functions primarily to:
A. Produce blood cells
B. Provide protection and support
C. Digest food
D. Store oxygen
Answer: B. Provide protection and support
Rationale: The exoskeleton protects tissues and prevents water loss.
10. Insects grow by:
, A. Binary fission
B. Molting (ecdysis)
C. Budding
D. Fragmentation
Answer: B. Molting (ecdysis)
Rationale: Because the exoskeleton is rigid, insects must shed it to grow.
11. Molting is controlled primarily by:
A. Insulin
B. Thyroxine
C. Ecdysone
D. Cortisol
Answer: C. Ecdysone
Rationale: Ecdysone is the principal molting hormone in insects.
12. Compound eyes are specialized for:
A. Hearing
B. Smell
C. Vision
D. Taste
Answer: C. Vision
Rationale: Compound eyes detect movement and provide a wide field of view.
13. Simple eyes in insects are called:
A. Spiracles
B. Cerci
C. Ocelli
D. Palps
