A) Rhizobium - Alfalfa
B) Frankia - Alnus
C) Rhodospirillum - Mycorrhiza
D) Anabaena - Nitrogen fixer
Correct Answer: C
Solution :
| [c] Rhodospirillum is anaerobic, free living nitrogen fixer. |
| Mycorrhiza is a symbiotic relationship between fungi and roots of higher plants. |
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