Question

explain life cycle of Nitrogen​

Answer 1

Hey Mate! ❤

Nitrogen Cycle or Life cycle of nitrogen

The nitrogen cycle or often known as Life cycle of nitrogen is a complex biogeochemical cycle in which nitrogen is converted from its inert atmospheric molecular form (N2) into a form that is useful in biological processes. (For help i have given a diagram of Life cycle of nitrogen)

The nitrogen cycle contains several stages: Such as

Nitrogen fixation, Nitrification, Assimilation, Ammonification, and Denitrification.

I have too given explanation of these! ✌

I hope you will understand...

1)Nitrogen fixation

Atmospheric nitrogen occurs primarily in an inert form (N2) that few organisms can use; therefore it must be converted to an organic – or fixed – form in a process called nitrogen fixation. Most atmospheric nitrogen is ‘fixed’ through biological processes. First, nitrogen is deposited from the atmosphere into soils and surface waters, mainly through precipitation. Once in the soils and surface waters, nitrogen undergoes a set of changes: its two nitrogen atoms separate and combine with hydrogen to form ammonia (NH4+). This is done by microorganisms that fall into three broad categories: bacteria living in symbiotic relationships with certain plants, free anaerobic bacteria, and algae.

2)Nitrification

While ammonia can be used by some plants, most of the nitrogen taken up by plants is converted by bacteria from ammonia – which is highly toxic to many organisms – into nitrite (NO2-), and then into nitrate (NO3-). This process is called nitrification, and these bacteria are known as nitrifying bacteria.

3)Assimilation

Nitrogen compounds in various forms, such as nitrate, nitrite, ammonia, and ammonium are taken up from soils by plants which are then used in the formation of plant and animal proteins.

4)Ammonification

When plants and animals die, or when animals emit wastes, the nitrogen in the organic matter reenters the soil where it is broken down by other microorganisms, known as decomposers. This decomposition produces ammonia which is then available for other biological processes.

5)Denitrification

Nitrogen makes its way back into the atmosphere through a process called denitrification, in which nitrate (NO3-) is converted back to gaseous nitrogen (N2). Denitrification occurs primarily in wet soils where the water makes it difficult for microorganisms to get oxygen. Under these conditions, certain organisms – known as denitrifiying bacteria – will process nitrate to gain oxygen, leaving free nitrogen gas as a by product.

And for help i have given a diagram!

Hope it helps! ☺✌

✡Mark as Brainliest!✡

Answer 2

Answer:

Explanation:

The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere,terrestrial and marine ecosystems.

The important processes included in the process of nitrogen cycle are fixation,ammonification,nitrification and denitrifucation.