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प्रश्न
In the metropolitan cities of India, many children are suffering from allergy/asthma. What are the main causes of this problem. Give some symptoms of allergic reactions.
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उत्तर
Allergy is the exaggerated response of the immune system to certain antigens present in the environment. In metropolitan cities, lifestyle is responsible in lowering of immunity and sensitivity to allergens. More polluted environment increases the chances of allergy in children. Some symptoms of allergic reactions are sneezing, watery eyes, running nose and difficulty in breathing.
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संबंधित प्रश्न
Match the items given under column I with those given under column II.
| Column A | Column B | ||
| 1 | Dust allergy | a. | Nuts |
| 2 | food allergy | b. | Pollen |
| 3 | Seasonal allergy | c. | Asthma |
Name any three allergens.
Define the term “allergy”.
Write short (1-2 sentences) note on the following:
Allergy
Asthma may be attributed to:
For a person who has an allergy, the type of antibody produced in his body is ______.
Inflammatory responses in allergy are caused by the release of one of the following by mast cells:
The antigen-binding site in an antibody is found between ______
A person shows strong unusual hypersensitive reactions when exposed to certain substances present in the air. Identify the condition. Name the cells responsible for such reactions. What precaution should be taken to avoid such reactions.
Compare the life style of people living in the urban areas with those of rural areas and briefly describe how the life style affects their health.
Many people experience allergic symptoms of sneezing or wheezing on exposure to certain substances in the environment. Give two examples of such substances. Which type of antibodies are produced by the body in response to these substances? Mention the role of mast cells in this kind of allergic response.
A boy developed some allergic reactions when he straight entered into his air conditioned room after a game of football outside his house. Write any two symptoms that could be noticed in such condition. How does our body combat such conditions?
