A) one pair each of wings and halters
B) three pair of legs and one pair of developed wings
C) two pair of legs and two compound eyes
D) compound and simple eyes
Correct Answer: B
Solution :
Cockroaches, housefly and mosquito belongs to phylum- Arthropoda. In mosquito and housefly the second pair of wings forms a knob like structure known as halter or balancer. Its function is to balance the body during flight.
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