Final answer:
The primary lymphatic organs where lymphocytes are produced and/or mature are bone marrow and the thymus, which are essential for the maturation of B cells and T cells, respectively.
Step-by-step explanation:
The primary lymphatic organs, where lymphocytes are produced and/or mature, are the bone marrow and the thymus. The bone marrow is where all lymphocytes are produced, and where B cells mature. The thymus, on the other hand, is where T cells mature after they are produced in the bone marrow. These two organs play essential roles in the maturation of lymphocytes, preparing them for their critical role in the adaptive immune response.
Whereas secondary lymphatic organs such as the spleen, tonsils, and lymph nodes do not produce lymphocytes, they are important sites for the activation and clonal expansion of lymphocytes during an immune response. They filter lymph and blood, and they store lymphocytes that can respond to pathogens that enter these secondary organs.