Read the following passage and answer the question : The primary lymphoid organs are bone marrow and thymus, where immature lymphocytes differentiate into antigen sensitive Iymphocytes. They migrate to secondary lymphoid organ like spleen, lymph nodes, tonsils, paver’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. [tis 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, Iymphatic system., Antigens trapped in Iymph node are responsible for activation of Iymphocytes present there and cause the immune response. There is lymphoid tissue located within. Lining of mayor tracts like respiratory, digestive ad urinogenital tracts called mucous associated Iymphoid tissue (MALT).
Which of the following is NOT secondary lymphoid organ ?
Read the following passage and answer the question : The primary lymphoid organs are bone marrow and thymus, where immature lymphocytes differentiate into antigen sensitive Iymphocytes. They migrate to secondary lymphoid organ like spleen, lymph nodes, tonsils, paver’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. [tis 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, Iymphatic system., Antigens trapped in Iymph node are responsible for activation of Iymphocytes present there and cause the immune response. There is lymphoid tissue located within. Lining of mayor tracts like respiratory, digestive ad urinogenital tracts called mucous associated Iymphoid tissue (MALT).
Which of the following is NOT secondary lymphoid organ ?
Tonsils
Thymus
Appendix
Payer’s Patches
The Correct Option is B
Solution and Explanation
The option that is NOT a secondary lymphoid organ according to the passage is "Thymus."
Top Questions on Human health and disease
Read the following passage and answer the questions that follow. Prevention is the frontline response to drug use. Effective interventions address the underlying conditions contributing to drug use, such as a lack of connection to family or community, instability, insecurity, trauma, mental health issues, etc. When addressed, these factors can effectively prevent the initiation of drug use and the progression to drug use disorders. Study the few key figures of drug use given below and answer the questions that follow.
(a) What do you infer from the figures in Table No. 1 about the people with drug use disorders, 2022 (in million)? State any two of your observations.
(b) How are Hepatitis C and HIV related to drug use disorders by people, as shown in Table No. 2? State the correlation between the two.
(c)
- [(i)] Give the scientific name of (p) shown in Table No. 1.
OR - [(ii)] Give the scientific name of (q) shown in Table No. 1.
- CBSE CLASS XII - 2025
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- [(i)] Give the scientific name of (p) shown in Table No. 1.
- Explain unique features of acquired immunity.
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- In the life cycle of a {Plasmodium, once the sporozoite enters the blood of the host, it invades the hepatic portal system, resulting in occurrence of change in the host body, leading to malaria
A. Sporozoite enters the hepatocytes and divides by schizogony leading to formation of cryptomerozoites
B. Inside RBCs, the micro-metacryptozoites become rounded and modify into a young trophozoites.
C. As the trophozoite grows in size, a central vacuole is developed so that the nucleus is pushed to one side into the peripheral cytoplasm, leading to amoeboid stage.
D. In Amoeboid stage the small red eosinophils granules appear in the cytoplasm of the host corpulses as Schuffner's granules}
Choose the most appropriate answer from the options given below:- CUET (PG) - 2025
- Zoology
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- Match LIST-I with LIST-II
\begin{tabularx}{0.8\textwidth}{|l|X|l|X|} \hline \multicolumn{2}{|c|}{LIST-I} & \multicolumn{2}{c|}{LIST-II}
\multicolumn{2}{|c|}{Types Cancer} & \multicolumn{2}{c|}{Tissues involved}
\hline A. & Carcinoma & I. & Muscle
B. & Chondroma & II. & Cartilage
C. & Sarcoma & III. & Blood
D. & Myeloma & IV. & Epithelial Tissue
\hline \end{tabularx}
Choose the most appropriate answer from the options given below:- CUET (PG) - 2025
- Zoology
- Human health and disease
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Concepts Used:
Immune System
It consists of tissues, cells, soluble molecules like antibodies and lymphoid organs. The WBC cells called the leucocytes have a significant role as they seek out to destroy the disease-causing organisms. These leucocytes are stored in different locations in the body including the spleen, bone marrow, and thymus. These organs are called as the lymphoid organs. The leucocytes are also present in the lymph nodes of the body.It is considered as the main lymphoid orga and. It produces all the blood cells including the lymphocytes. The thymus is an organ that is present near to the heart, beneath the breastbone.
