Which bacteria is found in roots of leguminous plants as symbionts?

Correct option is A

The correct answer is Rhizobium.
· Leguminous plants belong to the family Fabaceae.
· These plants have a symbiotic relationship with the soil bacteria Rhizobium, which lives in their roots.
· Rhizobium is a biofertilizer.
· Biofertilizers are the microorganisms that enrich the nutrient (nitrogen, phosphorus, etc.) quality of the soil.
· Rhizobium is a symbiotic bacterium that lives in the root nodules of leguminous plants and fixes atmospheric nitrogen into organic compound (ammonia), and it also fertilizes the soil.
· It causes the formation of special structures known as nodules within the cell, which fix atmospheric nitrogen.
· It accomplishes this with the help of the nitrogenase enzyme, which converts nitrogen to ammonium, a necessary factor for plant growth.
· Rhizobium bacteria form symbiotic associations with plants.
· Plants provide them with food and shelter, and these bacteria fix nitrogen in the soil.
Information Booster
· Microorganisms are too small and are not visible to naked eyes.
· Microorganisms are found in air, water, and in the bodies of plants and animals.
· They may be unicellular or multicellular.
· Microorganisms are classified into four major groups:
· Bacteria: Bacteria convert gaseous nitrogen into a usable form and release it into the soil.
· Fungi: Fungi are cosmopolitan and occur in air, water, soil, and on animals and plants.
· Protozoa: Protozoans are heterotrophs and live as predators or parasites.
· Algae: Algae are largely aquatic, both fresh water and marine organisms.