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Visual Worksheet: Allergy
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Page 1 Route Example Skin ________ Mouth ________ Nose ________ Symptom Allergy? Sneezing ? Fever ? Itchy skin ? Broken bone ? Watery eyes ? A l l e r g y Q1 ENTRY ROUTES OF ALLERGENS Match the route with example: (Options: Food, Dust/Pollen, Insect bite) Q2 Fill in the Blanks Allergy was first termed in ______ year. Allergies occur due to ______ immune response. ______ is released during allergic reactions. Airborne allergens affect ______ and lungs. Severe allergic reaction is called ______. Q3 Write the type of allergy: Sneezing during spring ? __________ Vomiting after eating peanuts ? __________ Breathing difficulty due to dust ? __________ Reaction after taking penicillin ? __________ Q4 Symptoms Sorting Tick ( ?) correct symptoms:Read More
FAQs on Visual Worksheet: Allergy
| 1. What are allergies and how do they occur? |  |
Ans. Allergies are overreactions of the immune system to substances that are usually harmless, known as allergens. When a person with an allergy encounters an allergen, their immune system mistakenly identifies it as a threat and produces antibodies called Immunoglobulin E (IgE). This triggers the release of chemicals such as histamine, leading to allergy symptoms like sneezing, itching, and swelling.
| 2. What are some common allergens? | |
Ans. Common allergens include pollen from trees, grasses, and weeds, dust mites, mould spores, pet dander, certain foods like nuts, dairy, and shellfish, insect stings, and some medications. Each of these can provoke allergic reactions in sensitive individuals.
| 3. How can allergies be diagnosed? | |
Ans. Allergies can be diagnosed through various methods, including skin prick tests, where small amounts of allergens are introduced to the skin to observe reactions, and blood tests that measure the presence of IgE antibodies specific to certain allergens. A thorough medical history and symptom review are also crucial in the diagnosis process.
| 4. What are the typical symptoms of an allergic reaction? | |
Ans. Symptoms of an allergic reaction can vary widely and may include sneezing, runny or blocked nose, itchy or watery eyes, skin rashes, hives, abdominal pain, and in severe cases, anaphylaxis, which is a life-threatening reaction that can cause difficulty breathing, swelling of the throat, and a rapid drop in blood pressure.
| 5. What are some common treatments for allergies? | |
Ans. Common treatments for allergies include avoiding known allergens, using antihistamines to relieve symptoms, corticosteroids to reduce inflammation, and in some cases, allergy shots (immunotherapy) to desensitise the immune system to specific allergens. Emergency epinephrine injections may be prescribed for individuals at risk of anaphylaxis.
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Apr 21, 2026 Last updated
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Document Description: Visual Worksheet: Allergy for Class 7 2026 is part of Biology Class 7 ICSE preparation. The notes and questions for Visual Worksheet: Allergy have been prepared according to the Class 7 exam syllabus. Information about Visual Worksheet: Allergy covers topics like and Visual Worksheet: Allergy Example, for Class 7 2026 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Visual Worksheet: Allergy.
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