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प्रश्न
Give suitable explanations for the following :
One should breathe by nose and never by mouth.
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उत्तर
One should breathe by nose and never by mouth because nose contains hair and mucous to trap dust and micro-organisms, so that the inhaled air becomes pure and the respiratory passage is free of dust and micro-organisms.
संबंधित प्रश्न
Give suitable explanations for the following :
Hands must be washed before eating food.
Which one of the following is an unhealthy habit?
Name the two types of dysentery and their causative germs and give one main precaution against them.
Name the following:
Organisms that transmit microbes that cause disease.
What is hygiene?
Give major aspects of personal hygiene.
Describe at least four healthy habits which one should develop.
How does personal cleanliness help to keep off diseases?
Explain the following:
We should not put on other persons clothes.
Why is it important for proper disposal of human excreta?
Name the following:
The chemical by which you can kill rats.
Match item in Column A with the appropriate items in Column B:
| Column A | Column B |
| Raticide | Filaria |
| Culex | Insecticide |
| Rat flea | Encephalitis |
| DDT | Plague |
| Housefly | Gastroenteritis |
| Cockroach | Cholera |
| Cholera | Protozoan |
| Giardia | Contamination |
| Faeces | Vibrio |
State true or false. If false, correct the statement.
All food should be covered.
