As an Amazon Associate I earn from qualifying purchases.

What is Allergy in Biology? PDF | Download eBooks

Learn Allergy definition in biology with explanation to study “What is Allergy”. Study allergy explanation with biology terms to review biology course for online degree programs.

Allergy Definition

  • Allergies are exaggerated (hypersensitive) responses to certain antigens called allergens.

    Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson



Allergy Explanation

Allergies, also known as allergic diseases, are a number of conditions caused by hypersensitivity of the immune system to typically harmless substances in the environment. These diseases include hay fever or food allergies etc. Symptoms may include red eyes, an itchy rash, sneezing, a runny nose, shortness of breath, or swelling. Food intolerances and food poisoning are separate conditions. Food, insect stings, and medications are common causes of allergic reactions

Keep Learning Biology Explanations

What is De-etiolation?

De-etiolation, is a series of physiological and biochemical changes a plant shoot undergoes when emerging from the ground or in ...

What is Crop rotation?

Crop rotation is the practice of growing a series of dissimilar or different types of crops in the same area ...

What are Carnivorous plants?

These carnivorous plants live in acid bogs and other habitats where soils are poor in nitrogen and other minerals. Pitcher ...

What is Pith?

Pith, or medulla, is a tissue in the stems of vascular plants. Pith is composed of soft, spongy parenchyma cells, ...

What is Inflammatory response?

Inflammation is part of the complex biological response of body tissues to damaging stimuli, such as pathogens, damaged cells, or ...

What is Tracheid?

Tracheids are elongated cells in the xylem of vascular plants that serve in the transport of water and mineral salts. ...