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Biology · 2026 · 2 marks
CBSE 2026 · Region 2 · Set 3 · Q19
Study the flow chart and answer the following questions: (a) Identify A, B and C in the flow chart. (b) Give one another example of bio-fertilizer B.
Study the flow chart and answer the following questions :
(a)
Identify A, B and C in the flow chart.
(b)
Give one another example of bio-fertilizer B.
Marking-scheme solution
(a)
A- Mycorrhiza, B- Free living nitrogen fixing bacteria, C- Symbiotic nitrogen
fixing bacteria.
(b)
Azotobacter
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CBSE Class 12 Biology past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.