MCQ
Which one is a nonsymbiotic nitrogen fixer
- ARhizobium
- BOscillatoria
- ✓Nostoc
- DLactobacillus
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| Column - $I$ | Column - $II$ |
| $(i)$ Typhoid |
$(a)$ Haemophilus influenzae |
| $(ii)$ Malaria | $(b)$ Wuchereria bancrofti |
| $(iii)$ Pneumonia | $(c)$ Plasmodium vivax |
| $(iv)$ Filariasis | $(d)$ Salmonella typhi |