Consider the given two statements:
Assertion (A): Histamine is used to treat allergies.
Reason (R): Histamine is a vasoconstrictor.
 
1. Both (A) and (R) are True and (R) correctly explains (A)
2. Both (A) and (R) are True but (R) does not correctly explain (A)
3. (A) is True, (R) is False
4. (A) is False, (R) is False
Subtopic:  Allergies & Autoimmunity |
Level 3: 35%-60%
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The causation of ‘auto-immune’ disorders in humans is based on:
I: ‘memory’ of the immune system.
II: ability to distinguish between self and non-self.
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic:  Allergies & Autoimmunity |
 54%
Level 3: 35%-60%
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 What cells in the blood are stimulated by IgE antibodies to initiate allergic response?
1. Mast cells
2. Monocytes
3. Lymphocytes
4. Basophils
Subtopic:  Allergies & Autoimmunity |
Level 4: Below 35%
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