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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

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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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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अध्याय 8: Human Health and Diseases - SHORT ANSWER [पृष्ठ ५९]

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एनसीईआरटी एक्झांप्लर Biology Exemplar [English] Class 12
अध्याय 8 Human Health and Diseases
SHORT ANSWER | Q 17. | पृष्ठ ५९

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.


Write short (1-2 sentences) note on the following:  

Allergy


Asthma may be attributed to:


Increased asthmatic attacks in certain seasons are related to:


The antigen-binding site in an antibody is found between ______


During a field trip, one of your friend in the group suddenly became unwell, she started sneezing and had trouble in breathing. Name and explain the term associated with such sudden responses. What would the doctor recommend for relief?


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?


Which type of antibody is produced during an allergic immune response?


Which cells are responsible for releasing histamine and serotonin during an allergic reaction?


How is the cause of an allergy identified?


What is the mechanism of action of sodium cromoglycate?


Which situation can trigger an anaphylactic shock reaction similar to injection of a foreign protein?


What cardiovascular changes occur during anaphylactic shock?


How has modern lifestyle affected immunity and allergen sensitivity?


Which of the following statements about IgE antibodies is correct?


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