Question

Allergies occurs when the immune system responds to normally harmless substances

Answer 1

yes, this statement is true.

The exaggerated response of the immune system to certain antigens present in the environment is called allergy.

The substances to which such an immune response is produced are called allergens.

Eg of allergens - Dust, pollen, animal dander etc.

Answer 2

$\huge{\boxed{\sf{Allergies}}}$

✓ The statement is infact true that allergies occurs when the immune system responds to some allergens like dust, pollen grains etc.

✓ The response which our immune system gives to the environment are known as allergies.

✓ The substances which causes allergies are termed as allergens which may be dust, fodder, animal dander, etc.

✓ Increase in level of Histamine and serotonin results in allergies.

✓ Anti-histamine is commonly used to cure the symptoms of allergies.