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Byju's Answer
Standard VII
Biology
Allergic Reaction
Define allerg...
Question
Define allergy.
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Solution
An allergy is an exaggerated response of the immune system to certain allergens present in the environment.
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Define allergy or hypersensitivity.
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Define Allergy. Give any two symptoms of Allergic reactions.
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Pick the odd one out.
Milk allergy, Pollen allergy, Fish allergy, Egg allergy.
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Define the following:
(i) Disease
(ii) Health
(iii) Vaccinations
(iv) Immunity
(v) Antiseptic
(vi) Cancer
(vii) Allergy
(viii) Hypersensitivity
(ix) Penicillin
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(xii) Suphonamide drugs
(xiii) Acquired disease
(xiv) Prophylaxis
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Allergy occurring in certain times of the year is perennial allergy.
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