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Biology · 2022 · 2 marks
CBSE 2022 · Region 3 · Set 2 · Q3
(a) (i) Write the Scientific name of the plant from where natural cannabinoids are obtained. (ii) Mention the parts of the plant that are used for…
(a)(i)
Write the Scientific name of the plant from where natural cannabinoids are obtained.
(ii)
Mention the parts of the plant that are used for extracting the drug.
(iii)
How does the drug affect human body ?
OR
(b)
Epithelial lining of our intestine is considered as secondary lymphoid organ. Justify the statement.
Marking-scheme solution
(a)(i)
Cannabis sativa
(ii)
Flower tops or inflorescences, leaves and resin
(iii)
Influences cardio vascular system
OR(b) Provide site for interaction of lymphocytes with the antigen, lymphocytes proliferate to become effector cells.
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CBSE Class 12 Biology past-paper question from the 2022 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.