MCQOPTIONS
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MCQOPTIONS
| 1. |
Root nodules for nitrogen fixation of a non-leguminous tree possess [BHU 1994] |
| A. | Frankia |
| B. | Rhizobium |
| C. | Azotobacter |
| D. | Thiobacillus |
| Answer» B. Rhizobium | |