Advertisements
Advertisements
प्रश्न
List any three effective methods for controlling mosquitoes.
Advertisements
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:
Which one of the following vitamin deficiency diseases can be cured by eating a diet which includes carrot, yellow fruits, vegetables, butter, milk, fish ?
- Beri-beri
- Dermatitis
- Night blindness
- Scurvy
Write, in brief, about the following:
Fever
Which of the following statement are true (T) and which ones are false (F)? Mark T or F:
Malaria is a vector-borne disease.
Name few vectors and diseases caused by them.
Write a brief account on the following disease:
Malaria
Fill in the blank:
The causative agent of malaria is a _______.
One of the means of indirect transmission of a disease is ______.
______ is a vector of viral disease dengue.
Assertion: Dengue can be treated by intake of antibiotics.
Reason: Antibiotics blocks the multiplication of viruses.
The incubation period of the virus for chikungunya is usually ______.
Mosquito-borne viral diseases are ______.
The use of ______ drugs kills the stages of the malaria parasite.
Why is dengue also known as break-bone fever?
Name the different species of protozoa plasmodium.
We are advised to take bland and nutritious food when we are sick. What is the reason?
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.
Observe the following set of symptoms given below:
- Frontal headache
- Liver enlargement
- Bleeding gums
- Excessive pain in the body
- Pain behind the eyes
- Rupture of veins in kidneys
To which of the following type of diseases do these symptoms belong?
