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Root nodules are special structures that contain nitrogenous bacterias , those stores atmospheric nitrogen to soil.
Nitrogen cycle
Pulse plants have nodules to help them convert nitrogen in the atmosphere to ammonia that can be used by the pulse plants to manufacture amino acids, proteins, nucleic acids, and other nitrogen-containing compounds that are necessary for the pulse plants to survive.The conversion of atmospheric nitrogen into ammonia is called nitrogen fixation. The nitrogen fixation process starts with the formation of nodules.Rhizobium is a common soil bacterium which invades the roots of the pulse plant and multiplies within the cells of the cortex layer. Within a week after infection small nodules are visible to the naked eye.The nodules grow and turn pink or reddish in color indicating that the process of nitrogen fixation has started.
the mechanism how pulse crop fix atmospheric nitrogen.
In nodules on the roots.
they are found growing the roots of plants e.g. cress
They have nodules on the roots which has nitrogen fixing bacteria
Meat does not have roots. Plants have roots. I think you copied your homework question incorrectly.
These bumps are called nodules
This is not a homework question that can be copied from this website. We are a question and answer site, not a drawing and diagramming site.