Thank you for reporting, we will resolve it shortly
Q.
Common characteristics of mosquitoes, houseflies and cockroaches are :
Haryana PMTHaryana PMT 2004
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.