Question

Assertion :Mast cells in human body release excess amount of inflammatory chemicals which cause allergic reactions Reason: Allergens in the environment on reaching human body stimulate mast cells in certain individuals

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

The mast cell is a type of white blood cell that contains many granules rich in histamine and heparin. They play an important role in allergy and anaphylaxis. The production of allergens (which cause allergy) stimulates the release of IgE (immunoglobulin E) antibodies. These IgE antibodies bind to the allergens and then activates receptors of mast cells which triggers the release of inflammatory chemicals such as histamine.

So, the correct answer is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'.