Which of the following fixes atmospheric nitrogen?
Answer Details
Rhizobium is the bacterium that fixes atmospheric nitrogen.
Nitrogen is a very important element for living organisms, and it is a major component of DNA, RNA, and proteins. However, most living organisms cannot use atmospheric nitrogen directly, as it is in a stable form. Nitrogen must first be "fixed" or converted into a usable form, such as ammonia or nitrate.
Rhizobium is a type of bacteria that has the ability to convert atmospheric nitrogen gas into a form that plants can use. It does this by forming a symbiotic relationship with certain types of plants, such as legumes. The Rhizobium bacteria infect the roots of these plants and form structures called nodules. Within the nodules, the Rhizobium bacteria convert atmospheric nitrogen into a usable form of nitrogen that the plant can use to grow and develop.
In summary, Rhizobium is the bacterium that fixes atmospheric nitrogen by forming a symbiotic relationship with certain types of plants and converting nitrogen gas into a form that the plant can use.