MCQ Collection
BS Zoology Semester Exam MCQs
Practice BS Zoology Semester Exam questions with answers and explanations.
Choose an option to check your answer.
A.
production of compound eyes
B.
storage of visual pigments only
C.
water and ion recovery before waste elimination
D.
formation of wing veins
Show Answer
Correct Answer: C. water and ion recovery before waste elimination
Explanation:
The hindgut helps conserve water and regulate salts. This is important for insects living in dry environments.
Choose an option to check your answer.
A.
expand tracheal volume and support ventilation in active insects
B.
make eggs resistant to predators
C.
form mandibles in larvae
D.
digest cellulose in the cuticle
Show Answer
Correct Answer: A. expand tracheal volume and support ventilation in active insects
Explanation:
Air sacs are enlarged parts of the tracheal system. They can improve ventilation, reduce body weight, and support high oxygen demand during flight.
Choose an option to check your answer.
A.
detect light intensity
B.
produce the outer cuticle
C.
pump hemolymph to wings
D.
secrete saliva that moistens food and may begin digestion
Show Answer
Correct Answer: D. secrete saliva that moistens food and may begin digestion
Explanation:
Insect salivary glands release secretions into the mouth region. Saliva can moisten food, contain enzymes, or support special functions in certain species.
Choose an option to check your answer.
A.
a sensory hair detecting odor
B.
fast contracting muscle used in movement and flight
C.
a gland producing eggs
D.
a wax layer preventing water loss
Show Answer
Correct Answer: B. fast contracting muscle used in movement and flight
Explanation:
Insect skeletal muscles are striated and capable of rapid contractions. This is especially important in flight muscles and active locomotion.
Choose an option to check your answer.
A.
formation of wing veins
B.
storage of visual pigments only
C.
production of compound eyes
D.
water and ion recovery before waste elimination
Show Answer
Correct Answer: D. water and ion recovery before waste elimination
Explanation:
The hindgut helps conserve water and regulate salts. This is important for insects living in dry environments.
Choose an option to check your answer.
A.
expand tracheal volume and support ventilation in active insects
B.
form mandibles in larvae
C.
digest cellulose in the cuticle
D.
make eggs resistant to predators
Show Answer
Correct Answer: A. expand tracheal volume and support ventilation in active insects
Explanation:
Air sacs are enlarged parts of the tracheal system. They can improve ventilation, reduce body weight, and support high oxygen demand during flight.
Choose an option to check your answer.
A.
pump hemolymph to wings
B.
secrete saliva that moistens food and may begin digestion
C.
detect light intensity
D.
produce the outer cuticle
Show Answer
Correct Answer: B. secrete saliva that moistens food and may begin digestion
Explanation:
Insect salivary glands release secretions into the mouth region. Saliva can moisten food, contain enzymes, or support special functions in certain species.
Choose an option to check your answer.
A.
a gland producing eggs
B.
a sensory hair detecting odor
C.
a wax layer preventing water loss
D.
fast contracting muscle used in movement and flight
Show Answer
Correct Answer: D. fast contracting muscle used in movement and flight
Explanation:
Insect skeletal muscles are striated and capable of rapid contractions. This is especially important in flight muscles and active locomotion.
Choose an option to check your answer.
A.
production of compound eyes
B.
storage of visual pigments only
C.
formation of wing veins
D.
water and ion recovery before waste elimination
Show Answer
Correct Answer: D. water and ion recovery before waste elimination
Explanation:
The hindgut helps conserve water and regulate salts. This is important for insects living in dry environments.
Choose an option to check your answer.
A.
make eggs resistant to predators
B.
form mandibles in larvae
C.
expand tracheal volume and support ventilation in active insects
D.
digest cellulose in the cuticle
Show Answer
Correct Answer: C. expand tracheal volume and support ventilation in active insects
Explanation:
Air sacs are enlarged parts of the tracheal system. They can improve ventilation, reduce body weight, and support high oxygen demand during flight.
Choose an option to check your answer.
A.
secrete saliva that moistens food and may begin digestion
B.
pump hemolymph to wings
C.
detect light intensity
D.
produce the outer cuticle
Show Answer
Correct Answer: A. secrete saliva that moistens food and may begin digestion
Explanation:
Insect salivary glands release secretions into the mouth region. Saliva can moisten food, contain enzymes, or support special functions in certain species.
Choose an option to check your answer.
A.
a wax layer preventing water loss
B.
fast contracting muscle used in movement and flight
C.
a gland producing eggs
D.
a sensory hair detecting odor
Show Answer
Correct Answer: B. fast contracting muscle used in movement and flight
Explanation:
Insect skeletal muscles are striated and capable of rapid contractions. This is especially important in flight muscles and active locomotion.
