Answer :
Explanation:
Bacteria that fix N2 from the atmosphere, or nitrogen-fixing microbes, produce fixed nitrogen. Such organisms play a significant role inside the nitrogen cycle since they account for over 90% of all nitrogen-fixing. There are two available types of bacteria that fix nitrogen. The cyanobacteria (or blue-green algae), Anabaena, Nostoc, as well as genera like Clostridium, are included in the first category of bacteria, that can fix nitrogen. The mutualistic bacteria form the second kind. These include Rhizobium, which is connected to leguminous plants (such different types of peas), Frankia, which is connected to some dicotyledonous genera, and specific Azospirillum species, which are connected to cereal grasses. The symbiotic type of nitrogen-fixing bacteria enter the host plants' rhizoids, where they grow and encourage the growth of root nodules, plant cell widening, and bacteria that are associated with each other.
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