Question

Read the following passage and answer the question :
The primary lymphoid organs are bone marrow and thymus, where immature lymphocytes differentiate into antigen sensitive lymphocytes. They migrate to secondary lymphoid organ like spleen, lymph nodes, tonsils, payer’s patches of small intestine and appendix. All blood cells including lymphocytes are produced in bone marrow which is main lymphoid organ. Spleen is large reservoir of erythrocytes. It is large bean shaped organ mainly containing lymphocyte and phagocyte. It acts as filter of blood by trapping blood borne micro organism. Lymph nodes are small solid structures located at different points along lymphatic system. Antigens trapped in lymph node are responsible for activation of lymphocytes present there and cause the immune response. There is lymphoid tissue located within. Lining of major tracts like respiratory, digestive ad urinogenital tracts called mucous associated lymphoid tissue (MALT).
Mucous associated lymphoid tissue (MALT) is NOT found in :

• A. Urinogenital tract
• B. Digestive tract
• C. Tonsils
• D. Respiratory tract

Answer 1

Answer: (C)

Tonsils

Answer 2

Explanation:
Mucosa Associated Lymphoid tissue (MALT) is a system of small diffuse lymphoid tissue that is scattered along the mucosal lining of the human body. More than 50% of the lymphoid tissue present in the human body are located in the lining of the respiratory, digestive, and urinogenital tract. Apart from this MALT is also present in thyroid, breast, lung, salivary glands, eye, and skin.
According to the passage, MALT is not found in the tonsils. The tonsils are rather a type of mucosa associated lymphoid tissue (MALT) which surround the opening of the nasal and oral cavities.
So, the correct option is (C) : Tonsils.