Question
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:
NEET
Zoology
Microbes in Human Welfare
2025
NEET 2025
NEET Zoology Question (2025) — Solution
Options
- A. A only
- B. D only
- C. B only
- D. E only
Answer
B. D only
Step-by-step solution
Azotobacter, Oscillatoria, Anabaena and Nostoc can fix nitrogen but Volvox cannot fix nitrogen.
Related: Zoology — Microbes in Human Welfare · All PYQ Banks