Question

Rhizobium bacteria are associated with the fixation of
a. oxygen
b. carbon dioxide
c. nitrogen
d. water vapour.

Answer 1

It is the bacteria found in the root nodules of the leguminous plants and it is associated with the fixation of nitrogen because plants convert nitrogen into nitrates and then into nitrites..
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Answer 2

It is the microbes found in the root knobs of the leguminous plants and it is related with the obsession of nitrogen since plants convert nitrogen into nitrates and after that into nitrites.

Rhizobia are microorganisms that settle nitrogen in the wake of getting to be built up inside root knobs of vegetables.

To express qualities for nitrogen obsession, rhizobia require a plant have; they can't autonomously settle nitrogen.