Practice Library
All MCQs
Browse exam-wise, subject-wise, and country-wise MCQs with explanations.
Choose an option to check your answer.
A.
gills filter oxygen from water
B.
stylets pierce tissue and suck fluids
C.
cerci secrete silk around eggs
D.
mandibles grind dry seeds only
Show Answer
Correct Answer: B. stylets pierce tissue and suck fluids
Explanation:
Piercing-sucking mouthparts are adapted for feeding on plant sap or animal fluids. Needle-like stylets penetrate tissue while the insect draws liquid food.
Choose an option to check your answer.
A.
labium forms a coiled sucking tube
B.
mandibles cut and crush solid food
C.
spiracles grind plant tissue
D.
Malpighian tubules bite and chew
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Correct Answer: B. mandibles cut and crush solid food
Explanation:
Chewing mouthparts rely on strong mandibles. Grasshoppers and cockroaches use this type to cut, crush, and process solid food.
Choose an option to check your answer.
A.
labium forms a coiled sucking tube
B.
mandibles cut and crush solid food
C.
Malpighian tubules bite and chew
D.
spiracles grind plant tissue
Show Answer
Correct Answer: B. mandibles cut and crush solid food
Explanation:
Chewing mouthparts rely on strong mandibles. Grasshoppers and cockroaches use this type to cut, crush, and process solid food.
Choose an option to check your answer.
A.
Malpighian tubules bite and chew
B.
labium forms a coiled sucking tube
C.
spiracles grind plant tissue
D.
mandibles cut and crush solid food
Show Answer
Correct Answer: D. mandibles cut and crush solid food
Explanation:
Chewing mouthparts rely on strong mandibles. Grasshoppers and cockroaches use this type to cut, crush, and process solid food.
Choose an option to check your answer.
A.
labium forms a coiled sucking tube
B.
spiracles grind plant tissue
C.
mandibles cut and crush solid food
D.
Malpighian tubules bite and chew
Show Answer
Correct Answer: C. mandibles cut and crush solid food
Explanation:
Chewing mouthparts rely on strong mandibles. Grasshoppers and cockroaches use this type to cut, crush, and process solid food.
Choose an option to check your answer.
A.
jumping leg used for escape
B.
feathery antenna adapted for detecting airborne signals
C.
wax layer that prevents drying
D.
piercing tube used for blood feeding
Show Answer
Correct Answer: B. feathery antenna adapted for detecting airborne signals
Explanation:
Plumose antennae have many hair-like branches, increasing surface area. This is useful for detecting faint chemical signals, such as sex pheromones in some insects.
Choose an option to check your answer.
A.
jumping leg used for escape
B.
wax layer that prevents drying
C.
piercing tube used for blood feeding
D.
feathery antenna adapted for detecting airborne signals
Show Answer
Correct Answer: D. feathery antenna adapted for detecting airborne signals
Explanation:
Plumose antennae have many hair-like branches, increasing surface area. This is useful for detecting faint chemical signals, such as sex pheromones in some insects.
Choose an option to check your answer.
A.
piercing tube used for blood feeding
B.
feathery antenna adapted for detecting airborne signals
C.
jumping leg used for escape
D.
wax layer that prevents drying
Show Answer
Correct Answer: B. feathery antenna adapted for detecting airborne signals
Explanation:
Plumose antennae have many hair-like branches, increasing surface area. This is useful for detecting faint chemical signals, such as sex pheromones in some insects.
Choose an option to check your answer.
A.
piercing tube used for blood feeding
B.
jumping leg used for escape
C.
feathery antenna adapted for detecting airborne signals
D.
wax layer that prevents drying
Show Answer
Correct Answer: C. feathery antenna adapted for detecting airborne signals
Explanation:
Plumose antennae have many hair-like branches, increasing surface area. This is useful for detecting faint chemical signals, such as sex pheromones in some insects.
Choose an option to check your answer.
A.
feather-like antenna with many lateral branches
B.
thread-like antenna with nearly uniform segments
C.
clubbed antenna with enlarged terminal segments
D.
elbowed antenna with a long basal segment
Show Answer
Correct Answer: B. thread-like antenna with nearly uniform segments
Explanation:
Filiform antennae are slender and thread-like, with segments of similar width. They are common in many insects and support general sensory detection.
Choose an option to check your answer.
A.
elbowed antenna with a long basal segment
B.
thread-like antenna with nearly uniform segments
C.
clubbed antenna with enlarged terminal segments
D.
feather-like antenna with many lateral branches
Show Answer
Correct Answer: B. thread-like antenna with nearly uniform segments
Explanation:
Filiform antennae are slender and thread-like, with segments of similar width. They are common in many insects and support general sensory detection.
Choose an option to check your answer.
A.
clubbed antenna with enlarged terminal segments
B.
elbowed antenna with a long basal segment
C.
thread-like antenna with nearly uniform segments
D.
feather-like antenna with many lateral branches
Show Answer
Correct Answer: C. thread-like antenna with nearly uniform segments
Explanation:
Filiform antennae are slender and thread-like, with segments of similar width. They are common in many insects and support general sensory detection.
