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प्रश्न
Give one significant difference between primary lymphoid organs and secondary lymphoid organs. Give one example of each.
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उत्तर
Primary lymphoid organs – In these organs, immature lymphocytes differentiate into antigen- sensitive lymphocytes
e.g., Bone marrow, Thymus Secondary lymphoid organs – The matured lymphocytes undergo proliferation and differentiation
e.g., lymph nodes, spleen, tonsils.
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संबंधित प्रश्न
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Mucous membrane trapping the microbes acts as a ---------------
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Immunity acquired after an infection is ______immunity.
The epithelial barrier of the innate immune system is ____________.
Match column I with column II and choose the correct option.
| Column I | Column II | ||
| i. | Specificity | a. | Lymphocytes produced against each particular foreign molecule |
| ii. | Diversity | b. | Self-cells are not attacked by immune system of the own body |
| iii. | Memory | c. | Immune system works against multiple pathogens |
| iv. | Discrimination between self and non-self | d. | Stronger immune response on second encounter |
