Which microbe makes nitrogen fixing nodules on non-legumes?
AFasciola
BFormica
CFrankia
DFusarium
Answer & Solution
Correct answer: C. Frankia
1. Alnus is given as the host example.
2. It works like Rhizobium but on other plants.
3. It is Frankia.
_Source: NCERT Class 11 Biology, Ch 12 'Mineral Nutrition'_
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