Question

Difference between symbiotic and non symbiotic nitrogen fixation

Answer 1

Symbiotic nitrogen fixation:
1)It is the process of nitrogen fixation in soil in which nitrogen fixing bacteria live with host plants  to fix the nitrogen.
2) Bacteria and plant live in the condition where both take benefits from each other .
3) n this,bacteria mostly live in the nodules of roots of plant.

Non-symbiotic nitrogen fixation: 

1)The nitrogen fixation that is done by free living bacteria in the soil in known as non-symbiotic nitrogen fixation.
2)The bacteria live in free state , no symbiosis with plants and directly fix the nitrogen to make it available for the organisms use.

Answer 2

Nitrogen fixation is the process in which atmospheric nitrogen is made easily available to the living organisms for various purposes.

Symbiotic nitrogen fixation usually occurs in plants that carry nitrogen-fixing bacteria within their tissues. The best example is Rhizobium bacteria and leguminous plants. They both can survive independently, but it is beneficial to both if they are together as they nitrogen fixation takes place.

Relationships that are loose in between the nitrogen-fixing bacteria and the plants are called as associative relationships and the nitrogen-fixing is called as non-symbiotic nitrogen fixation. It occurs in rice roots. In non-symbiotic nitrogen fixation, the bacteria do not require a host plant. The free-living aerobic and anaerobic bacteria in the soil fix the atmospheric nitrogen and increase the nitrogen content of the soil.