Which of the following is a nitrogen – fixing bacterium? 1
a) Lactobacillus b) Rhizobium c) Yeast d) Acetobacter
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Answer:
rhizobium
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Answer: b] rhizobium is a nitrogen fixing bacterium ,Rhizobia are diazotrophic bacteria that fix nitrogen after becoming established inside the root nodules of legumes (Fabaceae). To express genes for nitrogen fixation, rhizobia require a plant host; they cannot independently fix nitrogen. In general, they are gram negative, motile, non-sporulating rods. if it helps please mark me brainliest
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