Statement I: The spleen is a large organ, shaped like a bean and mainly contains lymphocytes and phagocytes.
Statement II: The spleen functions as a blood filter, capturing microorganisms present in the blood.
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Both Statement I and Statement II are correct.
The spleen is a secondary lymphoid organ. Lymphocytes mature in the primary lymphoid organs (bone marrow and thymus) and then move to secondary lymphoid organs such as the spleen and lymph nodes, where they meet antigens.
Statement I: The spleen is a large organ, shaped like a bean and mainly contains lymphocytes and phagocytes. — True. The spleen is a large bean-shaped organ, and its main cells are lymphocytes and phagocytes.
Statement II: The spleen functions as a blood filter, capturing microorganisms present in the blood. — True. The spleen filters the blood by trapping microorganisms carried in it. It also holds a large reservoir of erythrocytes.
NCERT Extract:
Immune System in the Body – “… The spleen is a large bean-shaped organ. It mainly contains lymphocytes and phagocytes. It acts as a filter of the blood by trapping blood-borne microorganisms. Spleen also has a large reservoir of erythrocytes.”