Root and stem nodules fixing atmospheric nitrogen are found in
A
Vigna sinensis
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B
Sesbania aculeata
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C
Melilotus parviflora
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D
Sesbania rostrata
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Solution
The correct option is DSesbania rostrata Sesbania rostrata forms a symbiotic relationship with gram-negative Rhizobium, which leads to the formation of nitrogen-fixing nodules on both stem and roots. It is mainly used as green manure to improve soil fertility due to its fast growth, high biomass production and ability to convert large amounts of atmospheric nitrogen into a usable form for plants.