Question

Describe Nitrogen fixation or whole Nitrogen cycle ...

Answer 1

Nitrogen (N) is an essential component of DNA, RNA, and proteins, the building blocks of life. All organisms require nitrogen to live and grow. Although the majority of the air we breathe is N2, most of the nitrogen in the atmosphere is unavailable for use by organisms. This is because the strong triple bond between the N atoms in N2 molecules makes it relatively inert, or unreactive, whereas organisms need reactive nitrogen to be able to incorporate it into cells. In order for plants and animals to be able to use nitrogen, N2 gas must first be converted to more a chemically available form such as ammonium (NH4+), nitrate (NO3-), or organic nitrogen (e.g., urea, which has the formula (NH2)2CO). The inert nature of N2 means that biologically available nitrogen is often in short supply in natural ecosystems, limiting plant growth.

It is process in which the atmospheric nitrogen is converted into nitrogen compounds for the sustainable growth of plant and gain nitrogen compounds into atmospheric nitrogen.

In this process, The atmospheric nitrogen is either fixed in to the soil by Rhizobiums in the root nodules of leguminous plants which are certain bacteria. n addition to nitrogen-fixing bacteria, high-energy natural events such as lightning, forest fires, and even hot lava flows can cause the fixation of smaller, but significant, amounts of nitrogen.This nitrogen is mostly converted in to Ammonium.This is back converted to the atmospheric nitrogen by plants

Answer 2

Nitrogen fixation is the fixation of nitrogen from the atmosphere to the soil by certain bacteria like cyanobacteria.