A number of personnel were deputed by municipal corporation to check mosquito breeding in your school.
On the basis of this information answer the following questions:
(i) What places they should search for checking mosquito breeding?
(ii) Name two diseases caused by mosquitoes.
(iii) Name any two biological agents which can bring about the biocontrol of mosquitoes.

Modern life style in big cities and towns is surely making the life more easy and comfortable for people. On the contrary many more health issues and problems are on the rise and one of them is allergic reactions.
(a) Write any four steps you would suggest to rninirnise the cause of the above allergic responses
(b) List any two allergens. How does the human body respond to them? Explain

After consuming sugarcane juice from a roadside vendor, Monu suffered from cough. His mother advised him to cover his nose while coughting and sneezing.
Read the above passage and answer the following questions:
(i) Why did Monu fall ill?
(ii) Why did his mother advise him to cover his nose while coughting and snazing?

Municipal employee were taking samples of water from the coolers, flower pots and stagnant water at public places. Amit enquired from them about the purpose of this exercise. They replied that they were looking for the presence of larvae of mosquitoes in these samples.
Read the above passage and answer the following questions:
(i) Why were municipal employees looking for the presences of mosquitoes larvae?
(ii) Name three diseases spread by mosquitoes.
(iii) What value is displayed by municipal employees?

Grandfather advised his grandson Manoj that he must his wash his hands before meals and he always followed his advice. This habit helped in protecting him from a number of infectious diseases. In contrast, his friend seldom bothered to wash his stands and frequently suffered from one or the other disease and therefore, was very weak physically as well as in studies.
Read the above passage and answer the following questions:
(i) What happens when we wash our hands?
(ii) Name two diseases from which you can get protection by washing hands?
(iii) What values are displayed by grandfather?