Question

How can we control spreading of diseases by mosquitoes and houseflies? <!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> [Review Questions - Pg No.81 - SAQ - 1(c)]

Answer 1

• Mosquitoes – Mosquitoes while feeding on the blood of a malaria patient, gain the germs in their bodies, and get them transferred in the bloodstream (stream - the continuous movement of a liquid or gas.) of a healthy person whom they bite next.
• Mosquitoes so as a host for many bacteria which cause disease.
• Houseflies – It carries germs from garbage and deposits them on food. Then the person will get the disease if he eats the infected food.
• To prevent the diseases – All the food materials should be covered, air coolers should be cleaned regularly, sprays and powder should be used to prevent the growth of mosquito and flies