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Biology · 2022 · 3 marks
CBSE 2022 · Region 5 · Set 3 · Q7
Many people experience allergic symptoms of sneezing or wheezing on exposure to certain substances in the environment. Give two examples of such…
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.
Marking-scheme solution
-Dust, pollen, animal dander, mites, perfume, spores or any other correct allergens-IgE
Release Histamine, Serotonin
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CBSE Class 12 Biology past-paper question from the 2022 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.