Question

how do rhizobium bacteria and leguminous plants help each other

Answer 1

Rhizobium lives in the stem of leguminous plants .It converts atmospheric nitrogen into nitrates for the soil. Finally, the soil becomes rich in nitrogen. In return , the plant provide food and shelter to the bacteria.

Answer 2

Rhizobium is a special kind of bacteria which can convert atmospheric nitrogen to plant usable form, which plants cannot do. So they give the plants nitrogen and plants give them nutrition in return.