childofgodmeandu2
childofgodmeandu2 childofgodmeandu2
  • 18-05-2017
  • Geography
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why do plants have nodules on the roots?

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  • 18-05-2017
Plants have these because root nodules are formed when nitrogen fixing bacteria called "rhizobia" start to enter the cells of a host plant. Rhizobia normally live inside of the soil and they can exist without a host plant.
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