HORTICULTURE

Detailed explanation-1: -Rhizobium is a bacterium found in soil that helps in fixing nitrogen in leguminous plants. It attaches to the roots of the leguminous plant and produces nodules. These nodules fix atmospheric nitrogen and convert it into ammonia that can be used by the plant for its growth and development.

Detailed explanation-2: -These bacteria, named Rhizobium, evidently attach themselves to the roots of leguminous plants, forming nodules. They are also able to absorb elemental nitrogen from the air and transform it into ammonia, which can then be made available to the host plants.

Detailed explanation-3: -Rhizobia are nitrogen-fixing bacteria which invade root hairs of leguminous plants and induce, in a specific manner, the formation of root nodules in which they fix nitrogen. The early steps of the symbiosis can be considered as a reciprocal molecular communication between the two partners.

Detailed explanation-4: -Rhizobium is symbiotic nitrogen fixer bacteria which is found in root nodules of leguminous plants. Azotobacter is a non-symbiotic nitrogen fixer bacteria. So, the correct option is ‘False’.

Detailed explanation-5: -Rhizobium attaches to the roots of the leguminous plants resulting in the generation of root nodules. It forms a symbiotic association with the leguminous plants as it draws the nutrition from the plants and in turn helps with the fixation of nitrogen in the soil for the leguminous plants to take up.