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Biology · 2022 · 2 marks
CBSE 2022 · Region 4 · Set 1 · Q3
Some of the microbes used as biofertilizers are prokaryotes. Name the taxonomic group they come under. With the help of an example, mention how they…
Some of the microbes used as biofertilizers are prokaryotes. Name the taxonomic group they come under. With the help of an example, mention how they act as biofertilizers.
Marking-scheme solution
Bacteria / Cyanobacteria / Blue Green Algae
Rhizobium / Azospirillum / Azotobacter / Nostoc / Anabaena / Oscillatoria /
Fixes atmospheric Nitrogen into organic form / Enrich Nitrogen content of soil / Increases soil fertility
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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.