Nitrogen fixation, Biology

Assignment Help:

Nitrogen Fixation

Nitrogen is an essential constituent of living organisms and there is an inexhaustible supply of it in the atmosphere in the free form. Majority of living organisms including humans are incapable of utilising gaseous nitrogen but need organic nitrogen for their nutrition. It is for this reason that the nitrogen fixation or availability of organic nitrogen is critical for the living organisms. Free nitrogen is inert but certain groups of specialised organisms have the ability to utilise gaseous nitrogen fmn the atmosphere. The reduction of gaseous nitrogen or its conversion to organic nitrogen is called nitrogen fixation. The fixed nitrogen is readily utilised by other organems. Incorporation of atmospheric nitrogen into nitrogen compounds by nitrogen fixers such as Azotobacter in aerated soils; Clostridium in unaerated soils; Rhizobium in the nodules of legume roots and by a number of blue green algae such as Nostoc and Anabaena, is the most important step to ensure nitrogen supply for the living organisms. The quantum of biological nitrogen-fixation has direct effect on soil fertility.


Related Discussions:- Nitrogen fixation

Role of mesoderm and ectoderm in limb morphogenesis, Role of Mesoderm and E...

Role of Mesoderm and Ectoderm in Limb Morphogenesis A series of very interesting experiments on wing and leg buds of chick embryos have clarified the respective roles of meso

Describe five different types of gateway vectors, Describe five different t...

Describe five different types of gateway vectors that are available, what different functions they can perform, and for what purpose. e.g.  (1) Vector pXXX, (2) function - expre

Nucleic acids, Deoxyribonucleic Acid (DNA) - polymer of nucleotides contai...

Deoxyribonucleic Acid (DNA) - polymer of nucleotides containing genetic information that codes for proteins Nucleotide - a monomer of DNA consisting of a ribose/deoxyribose sug

Complement system, Complement system is a chemical defense system which ki...

Complement system is a chemical defense system which kills the microorganisms directly, it supplements inflammatory response, and works with, or complements, the immune system.

Development of endosperm, Development of Endosperm In a fertilized emb...

Development of Endosperm In a fertilized embryo sac, the primary endosperm nucleus is generally observed below the zygote. It divides, and further divisions of its products gi

Explain beginning and the end of the third interphase period, Q. What are t...

Q. What are the events that mark the beginning and the end of the third interphase period? What happens in the cell in this period? The third interphase period is the G2, It be

Factors affecting biotic potential - population growth, Factors Affecting B...

Factors Affecting Biotic Potential - Population Growth Biotic potential differs from one species to another e.g., bacterial populations can grow faster than population of oak

Formation of primary urine in malpighian tubules, Normal 0 fals...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Objectives of psychological components, Objectives of psychological compon...

Objectives of psychological components It is essential to have objective scores, in order to identify and classify deficits in psychological components and processes. The nee

Explain the tubal ligation, Explain the Tubal Ligation   This process i...

Explain the Tubal Ligation   This process is the most commonly utilized method of female sterilization. Tubal ligations are generally done in an outpatient surgical center. Thr

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd