The primary lymphoid organs are

1. Bone marrow and thymus

2. Bone marrow and spleen

3. Spleen and thymus

4. All three

Subtopic:  Human Immune System |
 89%
From NCERT
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Which of the following is not a lymphoid organ?

1. Appendix

2. Thyroid

3. Peyer's patches

4. Tonsils

Subtopic:  Human Immune System |
 70%
From NCERT
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The formation of effector lymphocytes will occur in

1. Bone marrow

2. Thymus

3. Appendix

4. Thyroid

Subtopic:  Human Immune System |
From NCERT
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What is the main lymphoid organ where all blood cells including lymphocytes are produced?

1. Spleen

2. Thymus

3. Lymph nodes

4. Bone marrow

Subtopic:  Human Immune System |
 84%
From NCERT
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The microenvironment  for the maturation and development of T lymphocytes is created by

1. Bone marrow

2. Thymus

3. Both A and B

4. Spleen

Subtopic:  Human Immune System |
 72%
From NCERT
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The immature lymphocytes differentiates into antigen sensitive lymphocytes in

1. Bone marrow

2. Thymus

3. Both A and B

4. Spleen

Subtopic:  Human Immune System |
 67%
From NCERT
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The site of interaction of lymphocyte with antigen is

1. Bone Marrow

2. Thymus

3. Both A and B

4. Lymph nodes

Subtopic:  Human Immune System |
 76%
From NCERT
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Thymus is not

1. Lobed organ

2. Bean shaped

3. Located near heart

4. Beneath the breastbone

Subtopic:  Human Immune System |
 78%
From NCERT
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Which of the following acts as a filter of blood?

1. Bone marrow

2. Lymph node

3. Spleen

4. Thymus

Subtopic:  Human Immune System |
 82%
From NCERT
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Spleen is not

1. Large reservoir of erythrocytes

2. Mainly contains lymphocytes and phagocytes

3. Bean shaped

4. Lobed organ

 

Subtopic:  Human Immune System |
 78%
From NCERT
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