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प्रश्न
List any three effective methods for controlling mosquitoes.
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उत्तर १
Effective methods for controlling mosquitoes:
(i) Spraying insecticides
(ii) Food should be protected by covering it
(iii) Eliminating breeding places of mosquitoes
उत्तर २
Three ways of controlling mosquitoes are:
(i) Mosquitoes can be controlled by spraying liquid insecticides like flit or D.D.T.
(ii) The breeding places of mosquitoes are sprayed with petroleum oils. The oil-film formed on the surface of water is toxic to the mosquito larvae.
(iii) Mosquito-repellents like mosquito cream, citronella, odomos and indalone help to keep mosquitoes away and protect us from getting bitten.
APPEARS IN
संबंधित प्रश्न
Write short (2-3 sentences) note on vector.
Define the following:
Vector
Write, in brief, about the following:
Fever
Match Column I with that Which is Most Appropriate in Column II.
| Column I | Column II |
| (a) Mosquito | (i) DDT |
| (b) Plasmodium | (ii) Dengue |
| (c) Entamoeba histolytica | (iii) Vector |
| (d) Aedes mosquito | (iv) Malaria |
| (e) Insecticide | (v) Dysentery |
Amoebiasis is caused by the protozoan:
Write a brief account on the following disease:
Malaria
Fill in the blank:
The causative agent of malaria is a _______.
What measure would you take to prevent water-borne diseases?
______ is a vector of viral disease dengue.
What is the mode of transmission of dengue?
How is Dengue fever spread? What are the symptoms?
The use of ______ drugs kills the stages of the malaria parasite.
Nilavembu kudineer is known to increase ______.
Malaria is caused by the fungal parasite plasmodium.
Why is dengue also known as break-bone fever?
Sanjay had an attack of chickenpox and has just recovered. The health officer of his locality says that the disease would not occur again. What would be the reason for this?
Name the different species of protozoa plasmodium.
We are advised to take bland and nutritious food when we are sick. What is the reason?
Discuss the strategies to adopt to prevent diseases transmitted through mosquitoes.
Name the causative agent of typhoid in humans. How does the pathogen gain entry into the human body? Write the diagnostic symptoms and mention the organ that is affected in severe cases.
