CBSE 2026 · Region 5 · Set 1 · Q19 · 2 marks
Name the lymphoid organ that acts as a large reservoir of erythrocytes. Explain its role as a lymphoid organ.
Marking-scheme solution
• Spleen.
• acts as a filter of the blood by trapping blood-borne microorganism.
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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.