In legumes, the root nodules contains the bacterium
Answers
Answer:
rhizobia
Many legumes have root nodules that provide a home for symbiotic nitrogen-fixing bacteria called rhizobia. This relationship is particularly common in nitrogen-limited conditions. The Rhizobia convert nitrogen gas from the atmosphere into ammonia, which is then used in the formation of amino acids and nucleotides.
Answer:
rhizobia
Explanation:
Rhizobia normally live in the soil, but when there is limited soil nitrogen, legumes release flavonoids which signal to rhizobia that the plant is seeking symbiotic bacteria.
When exposed to flavonoids, the Rhizobia release nodulation factor, which stimulates the plant to create deformed root hairs. Rhizobia then form an ” infection thread” which allows them to enter the root cells through the root hairs.
Once the rhizobia are inside the root cells, the root cells divide rapidly, forming a nodule.
The rhizobia create ammonia from nitrogen in the air, which is used by the plant to create amino acids and nucleotides. The plant provides the bacteria with sugars.