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All MCQs
Browse exam-wise, subject-wise, and country-wise MCQs with explanations.
Choose an option to check your answer.
A.
the region that bears walking legs only
B.
a blood-filled tube that forms the heart
C.
a soft abdominal sac for gas exchange
D.
a sclerotized structure bearing eyes, antennae, and mouthparts
Show Answer
Correct Answer: D. a sclerotized structure bearing eyes, antennae, and mouthparts
Explanation:
The insect head is a hardened capsule made of fused segments. It supports feeding structures and major sensory organs such as compound eyes and antennae.
Choose an option to check your answer.
A.
antennae digest proteins
B.
large mandibles cut hard wood
C.
labellar surfaces absorb liquid food
D.
spiracles filter pollen grains
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Correct Answer: C. labellar surfaces absorb liquid food
Explanation:
Houseflies use sponging mouthparts to take liquid or liquefied food. The labella help spread and absorb food from surfaces.
Choose an option to check your answer.
A.
antennae digest proteins
B.
labellar surfaces absorb liquid food
C.
large mandibles cut hard wood
D.
spiracles filter pollen grains
Show Answer
Correct Answer: B. labellar surfaces absorb liquid food
Explanation:
Houseflies use sponging mouthparts to take liquid or liquefied food. The labella help spread and absorb food from surfaces.
Choose an option to check your answer.
A.
antennae digest proteins
B.
labellar surfaces absorb liquid food
C.
large mandibles cut hard wood
D.
spiracles filter pollen grains
Show Answer
Correct Answer: B. labellar surfaces absorb liquid food
Explanation:
Houseflies use sponging mouthparts to take liquid or liquefied food. The labella help spread and absorb food from surfaces.
Choose an option to check your answer.
A.
large mandibles cut hard wood
B.
labellar surfaces absorb liquid food
C.
antennae digest proteins
D.
spiracles filter pollen grains
Show Answer
Correct Answer: B. labellar surfaces absorb liquid food
Explanation:
Houseflies use sponging mouthparts to take liquid or liquefied food. The labella help spread and absorb food from surfaces.
Choose an option to check your answer.
A.
maxillae form digging claws
B.
a long proboscis sucks nectar
C.
wings form a respiratory chamber
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.
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.
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.
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.
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.
mandibles grind dry seeds only
B.
cerci secrete silk around eggs
C.
stylets pierce tissue and suck fluids
D.
gills filter oxygen from water
Show Answer
Correct Answer: C. 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.
mandibles grind dry seeds only
B.
cerci secrete silk around eggs
C.
stylets pierce tissue and suck fluids
D.
gills filter oxygen from water
Show Answer
Correct Answer: C. 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.
