A person shows strong unusual hypersensi | Class 12 Biology Chapter Human Health and Disease, Human Health and Disease NCERT Solutions

Question:

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.

Answer:

If a person is hypersensitive to some substances that are present in the air, he may be allergic to it. Mast cells release some chemicals like histamine and serotonin, in response to these substance this results in the allergic reaction.

Precaution taken to prevent such reaction is to avoid the allergens responsible for particular allergy.

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Read the question carefully and focus on the core concept being asked.
Reference examples and data from the chapter when answering questions about Human Health and Disease.
Review previous year question papers to get an idea of how such questions may be framed in exams.
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Welcome to the NCERT Solutions for Class 12 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 20: A person shows strong unusual hypersensitive reactions when exposed to certain substances prese....

A person shows strong unusual hypersensi | Class 12 Biology Chapter Human Health and Disease, Human Health and Disease NCERT Solutions

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