CBSE Class 9 Answered
five features of nitrogen cycle.
Asked by Charu Nivetha | 16 Mar, 2014, 06:40: PM
Expert Answer
The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms.
The features of nitrogen cycle are-
(i)Nitrogen fixation-Atmospheric nitrogen must be processed, to be used by plants.
(ii)Assimilation-Plants can absorb nitrate or ammonia from the soil via their root hairs. If nitrate is absorbed, it is first reduced to nitrite and then ammonia.
(iii)Ammonification-Bacteria, or fungi in some cases, convert the organic nitrogen into ammonium , a process called ammonification.
(iv)Nitrification-Conversion of ammonia to nitrate is performed primarily by soil-living bacteria and other nitrifying bacteria.
(v)Denitrification- Denitrification is the reduction of nitrates back into the largely inert nitrogen gas , completing the nitrogen cycle which is performed by Clostridium in anaerobic conditions.
Answered by | 17 Mar, 2014, 04:04: PM
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