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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.
संबंधित प्रश्न
Put a tick mark (✓) against the correct alternative in the following statement:
A mosquito is a vector for :
Put a tick mark (✓) against the correct alternative in the following statement:
Dengue is caused by a
How can we control spreading of diseases by mosquitoes and houseflies ?
A disease caused due to Plasmodium
Define the following:
Vector
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The chemical substance mainly responsible for tooth disorders is
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 |
Write a brief account on the following disease:
Malaria
Assertion: Dengue can be treated by intake of antibiotics.
Reason: Antibiotics blocks the multiplication of viruses.
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______ mosquitoes also transmit Chikungunya and Yellow fever.
How is Dengue fever spread? What are the symptoms?
The stages of the malarial parasite are developed in the ______ of mosquito.
The incubation period of the virus for chikungunya is usually ______.
Malaria is caused by the fungal parasite plasmodium.
Define the following:
Vector
The infectious stage of Plasmodium that enters the human body is ______.
