Question

what is the difference between rhizobium and blue green algae in way of fixing nitrogen for plants ​

Answer 1

Nitrogen-fixing bacteria, microorganisms capable of transforming atmospheric nitrogen into fixed nitrogen (inorganic compounds usable by plants). More than 90 percent of all nitrogen fixation is effected by these organisms, which thus play an important role in the nitrogen cycle.

Answer 2

Answer:

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•Rhizobium are diazotrophic bacteria that fix nitrogen after becoming established inside the root nodules of legumes. 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.

•Blue—green algae (Cyanobacteria) are a special group of prokaryotes. ... BGA are widely distributed all over the earth. While fixing carbon from CO2, certain BGA can fix dinitrogen from the atmosphere, and are called nitrogen-fixing BGA, including free living and symbiotic forms.

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