Question

is non symbiotic and biological nitrogen fixation are same?

Answer 1

Answer:

Explanation:

Symbiotic N2-Fixing Bacteria:

The heterotrophic bacteria that fix di-nitrogen gas (N2) from the atmosphere in plant root nodules (symbiotic bacteria) have a mutually beneficial relationship with their host plants. Legumes (pod-bearing plants such as peas, beans, alfalfa and clovers etc.) had a beneficial effect upon both companion and whatever crop was planted next in the same soil. It is evident that the fixation of atmospheric nitrogen in the legume is due to the formation of root nodules.

Non-Symbiotic N2-Fixing Bacteria:

The non-symbiotic nitrogen fixing bacteria do not require a host plant. In 1891, Winogradsky observed that when soil was exposed to the atmosphere, the nitrogen content of the soil was recorded to be increased.

The anaerobic bacterium Clostridium pasteurianum was found responsible for such an increase of the nitrogen content in soil. In 1901, Beijerinck proved that there were also free-living aerobic bacteria, Azotobacter chroococcum that could fix atmospheric nitrogen.

Answer 2

Answer:

The main difference between symbiotic and non symbiotic nitrogen fixation is that the symbiotic nitrogen fixation is a function of nitrogen-fixing bacteria that live in symbiotic relationships with the host pants whereas the non symbiotic nitrogen fixation is a function of free-living bacteria in the soil.

Explanation:

Obligate symbiosis is when two organisms are in a symbiotic relationship because they can't survive without each other. Facultative symbiosis is when the species live together by choice. There are four main types of symbiotic relationships: mutualism, commensalism, parasitism and competition

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