Assertion (A): Antibody-mediated immune response is called the humoral immune response.
Reason (R): Antibodies are found in the lymph.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Details of Immunity |
 50%
From NCERT
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Assertion (A): Sudden sneezing and wheezing are symptoms of allergy to pollen, mites, etc.
Reason (R): Some of us are sensitive to some particles in the environment.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason (R): Some of us are sensitive to some particles in the environment.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Allergies & Autoimmunity |
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Assertion (A): In recent times, people get a comparatively protected environment early in life than older days.
Reason (R): Children in metro cities suffer from allergies.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason (R): Children in metro cities suffer from allergies.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Allergies & Autoimmunity |
 61%
From NCERT
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Assertion (A): Drugs are frequently used.
Reason (R): Drugs have many perceived benefits.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason (R): Drugs have many perceived benefits.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Drugs & Alcohol Abuse |
 51%
From NCERT
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Assertion (A): Cell mediated immunity induces humoral immunity
Reason (R): T cells themselves do not secrete antibodies but help B cells to produce them
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Reason (R): T cells themselves do not secrete antibodies but help B cells to produce them
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Â Details of Immunity |
 57%
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Assertion (A): Cocaine produces a sense of euphoria.
Reason (R): It interferes with the transport of the neurotransmitter dopamine
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Reason (R): It interferes with the transport of the neurotransmitter dopamine
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Â Drugs & Alcohol Abuse |
 85%
From NCERT
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Assertion (A): Bone marrow and thymus gland are primary lymphoid organs
Reason (R): Bone marrow and thymus provide the sites for interaction of lymphocytes with the antigen, which proliferate to become effector cells.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Reason (R): Bone marrow and thymus provide the sites for interaction of lymphocytes with the antigen, which proliferate to become effector cells.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Â Human Immune System |
 64%
From NCERT
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Assertion (A): AIDS patients suffer from infections due to Mycobacterium, viruses, fungi and even parasites like Toxoplasma.
Reason (R): AIDS causes progressive decrease in the number of helper T-lymphocytes.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Reason (R): AIDS causes progressive decrease in the number of helper T-lymphocytes.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Â AIDS |
 82%
From NCERT
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Assertion (A): IgA provides immunity against inhaled and ingested pathogens
Reason (R): IgA is secretory antibody and it is present in the lining of respiratory and intestinal tract.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Reason (R): IgA is secretory antibody and it is present in the lining of respiratory and intestinal tract.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. Both (A) and (R) are false.
Subtopic: Â Details of Immunity |
 55%
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Common cold:
| 1. | is caused by a bacterium |
| 2. | affects lungs very early in the disease |
| 3. | is not transmitted by droplets resulting from the cough or sneezes of an infected person |
| 4. | can be transmitted through contaminated objects such as pens, books, cups, doorknobs, computer keyboard or mouse, etc. |
Subtopic: Â Common Cold & Malaria Introduction |
 91%
From NCERT
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