Give the names of a few organisms that help in nitrogen fixation.
Give the names of a few organisms that help in nitrogen fixation.
Plants cannot use atmospheric nitrogen. Some of the nitrogen-fixing bacteria convert atmospheric nitrogen into ammonia making it available to plants.
Nitrogen fixation:- Nitrogen fixation is the essential biological process and the initial stage of the nitrogen cycle. In this process, nitrogen in the atmosphere is converted into ammonia (another form of nitrogen) by certain bacterial species like Rhizobium, Azotobacter, etc., and by other natural phenomena.
(i) Rhizobium Blue-green algae help in the fixation of atmospheric nitrogen into ammonia. (Rhizobium is the bacteria that live in symbiotic association with the root nodules of the leguminous plants. Fixation of nitrogen cannot be done independently. That is why rhizobium requires a plant host.)
(ii) Nitrosomonas ammonia to nitrites,
(iii) Nitrobactor converts nitrites into nitrates.
(iv) Anabaena is a free-living nitrogen-fixing bacteria. These entities are also known to form a symbiotic relationship with the plants such as mosquito fern.
Plants cannot use atmospheric nitrogen. Some of the nitrogen-fixing bacteria convert atmospheric nitrogen into ammonia making it available to plants.
Nitrogen fixation:- Nitrogen fixation is the essential biological process and the initial stage of the nitrogen cycle. In this process, nitrogen in the atmosphere is converted into ammonia (another form of nitrogen) by certain bacterial species like Rhizobium, Azotobacter, etc., and by other natural phenomena.
(i) Rhizobium Blue-green algae help in the fixation of atmospheric nitrogen into ammonia. (Rhizobium is the bacteria that live in symbiotic association with the root nodules of the leguminous plants. Fixation of nitrogen cannot be done independently. That is why rhizobium requires a plant host.)
(ii) Nitrosomonas ammonia to nitrites,
(iii) Nitrobactor converts nitrites into nitrates.
(iv) Anabaena is a free-living nitrogen-fixing bacteria. These entities are also known to form a symbiotic relationship with the plants such as mosquito fern.
