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Give the Steps of Nodule Formation.

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Steps of Nodule Formation : 

Rhizobium in soil interacts with roots of leguminous plants.


Rhizobia multiply, colonise and get attached to epidermal & root hair cells.


Curling of root hair & invasion of bacteria into root hair. 


Produce infection thread & carry bacteria into root cortex.


Initiate nodule formation in the cortex.

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