Practice Library
All MCQs
Browse exam-wise, subject-wise, and country-wise MCQs with explanations.
Choose an option to check your answer.
A.
hardening of wing veins
B.
loss of the head during metamorphosis
C.
formation of abdominal prolegs only
D.
concentration of sensory and feeding structures at the anterior end
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Correct Answer: D. concentration of sensory and feeding structures at the anterior end
Explanation:
Cephalization places sensory organs and mouthparts near the front of the body. This improves environmental detection and coordinated feeding behavior.
Choose an option to check your answer.
A.
acts as the main oxygen carrier
B.
filters nitrogenous waste like a kidney
C.
produces sound by wing vibration
D.
secretes the cuticle and helps form new cuticle during molting
Show Answer
Correct Answer: D. secretes the cuticle and helps form new cuticle during molting
Explanation:
The epidermis lies beneath the cuticle and secretes cuticular materials. During molting, it produces enzymes and new layers that allow the old exoskeleton to be replaced.
Choose an option to check your answer.
A.
thread-like antenna with nearly uniform segments
B.
clubbed antenna with enlarged terminal segments
C.
elbowed antenna with a long basal segment
D.
feather-like antenna with many lateral branches
Show Answer
Correct Answer: A. 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.
wings form a respiratory chamber
B.
a long proboscis sucks nectar
C.
maxillae form digging claws
D.
ovipositor pumps blood
Show Answer
Correct Answer: B. a long proboscis sucks nectar
Explanation:
Many butterflies have siphoning mouthparts. The proboscis uncoils to take nectar from flowers and coils again when not in use.
Choose an option to check your answer.
A.
single lens forms a detailed mammalian-like image
B.
many ommatidia form a broad visual field
C.
Malpighian tubules detect light
D.
statocysts detect gravity in each segment
Show Answer
Correct Answer: B. many ommatidia form a broad visual field
Explanation:
Compound eyes are made of many units called ommatidia. They provide a wide field of view and are useful for detecting movement, especially during flight or predator avoidance.
Choose an option to check your answer.
A.
secretes the cuticle and helps form new cuticle during molting
B.
produces sound by wing vibration
C.
acts as the main oxygen carrier
D.
filters nitrogenous waste like a kidney
Show Answer
Correct Answer: A. secretes the cuticle and helps form new cuticle during molting
Explanation:
The epidermis lies beneath the cuticle and secretes cuticular materials. During molting, it produces enzymes and new layers that allow the old exoskeleton to be replaced.
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.
Choose an option to check your answer.
A.
a long proboscis sucks nectar
B.
maxillae form digging claws
C.
wings form a respiratory chamber
D.
ovipositor pumps blood
Show Answer
Correct Answer: A. a long proboscis sucks nectar
Explanation:
Many butterflies have siphoning mouthparts. The proboscis uncoils to take nectar from flowers and coils again when not in use.
Choose an option to check your answer.
A.
many ommatidia form a broad visual field
B.
statocysts detect gravity in each segment
C.
Malpighian tubules detect light
D.
single lens forms a detailed mammalian-like image
Show Answer
Correct Answer: A. many ommatidia form a broad visual field
Explanation:
Compound eyes are made of many units called ommatidia. They provide a wide field of view and are useful for detecting movement, especially during flight or predator avoidance.
Choose an option to check your answer.
A.
secretes the cuticle and helps form new cuticle during molting
B.
filters nitrogenous waste like a kidney
C.
acts as the main oxygen carrier
D.
produces sound by wing vibration
Show Answer
Correct Answer: A. secretes the cuticle and helps form new cuticle during molting
Explanation:
The epidermis lies beneath the cuticle and secretes cuticular materials. During molting, it produces enzymes and new layers that allow the old exoskeleton to be replaced.
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.
ovipositor pumps blood
B.
maxillae form digging claws
C.
a long proboscis sucks nectar
D.
wings form a respiratory chamber
Show Answer
Correct Answer: C. a long proboscis sucks nectar
Explanation:
Many butterflies have siphoning mouthparts. The proboscis uncoils to take nectar from flowers and coils again when not in use.
