Azotobacter, Oscillatoria, Anabaena and Nostoc can fix nitrogen but Volvox cannot fix nitrogen.
NEET UG 2025 — Zoology Microbes in Human Welfare
Which of following organisms cannot fix nitrogen? A. Azotobacter B. Oscillatoria C. Anabaena D. Volvox E. Nostoc Choose the correct answer from the options given below:
Held on 30 Apr 2025 · Verified 9 Jul 2026.
A only
D only
B only
E only
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