Read the following statements and choose the correct option 1.The bone marrow is the primary lymphoid organ responsible for the production of all blood cells, including lymphocytes. 2.The thymus is located near the heart and remains the same size throughout life. 3.The spleen acts as a filter for blood, trapping blood-borne microorganisms and housing a reservoir of erythrocytes. 4.Lymph nodes are small solid structur

Step-by-step solution

The bone marrow is the main lymphoid organ where all blood cells including lymphocytes are produced. The thymus is a lobed organ located near the heart and beneath the breastbone. The thymus is quite large at the time of birth but keeps reducing in size with age and by the time puberty is attained it reduces to a very small size. Both bone-marrow and thymus provide micro-environments for the development and maturation of T-lymphocytes. The spleen is a large bean- shaped organ. It mainly contains lymphocytes and pha