CBSE 2022 · Region 3 · Set 3 · Q6 · 2 marks
Explain the role of ' B ' and ' T ' lymphocytes in providing immunity to humans.
Marking-scheme solution
\(\displaystyle B\)-lymphocytes - produce antibodies in response to pathogens in our blood/provide humoral immunity
T-lymphocytes - themselves do not secrete antibodies but help B-lymphocytes to produce them/ provide cell mediated immunity
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CBSE Class 12 Biology past-paper question from the 2022board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.