CBSE 2026 · Region 5 · Set 3 · Q17 · 2 marks
State the role of thymus as a lymphoid organ. Name the cells that are released from it and mention their functions.
Marking-scheme solution
Immature lymphocytes differentiate into antigen sensitive T-lymphocytes.
• T-lymphocytes / T-cells
− They help B-cells to secrete antibodies
− They involved in cell mediated immunity / CMI
Human Health and DiseaseImmunityRemembervery_short_answermedium
More from Human Health and Disease
- Name the category of drugs represented by the chemical structure given above. If the methyl group is…2023 · asked 3×
- Lactobacillus that sets milk into curd is categorised as:2024 · asked 3×
- Explain, giving two reasons, how immune response by "vaccine" is different from that by "antitoxin" in humans.2022 · asked 3×
- Student to attempt either option or. Describe any two situations where a medical doctor would recommend…2025 · asked 3×
- (i) Draw the structure of an antibody molecule and label any four of its parts. (ii) Differentiate between…2026 · asked 3×
- Assertion: Virus-infected cells produce interferons. Reason (R): Interferons can cause inflammation of…2024 · asked 3×
- Out of the following, select the correct match:2025 · asked 3×
- Though filariasis is not fatal, but the disease in humans is responsible for considerable suffering, gross…2022 · asked 3×
CBSE Class 12 Biology past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.