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Biology · 2022 · 3 marks
CBSE 2022 · Region 1 · Set 1 · Q10
Enumerate the main sources of bio-fertilisers giving one example of each.
Enumerate the main sources of bio-fertilisers giving one example of each.
Marking-scheme solution
Bacteria-Rhizobium / Azospirillum / Azotobacter
Fungi-Mycorrhiza / Glomus
Cyanobacteria-Anabaena / Nostoc / Oscillatoria
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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.