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

Explain adverse effects of lamivudine, Adverse effects of lamivudine  B...

Adverse effects of lamivudine  Because lamivudine is also active against hepatitis B virus (HBV), HIV-positive patients with chronic HBV infection may experience a flare of hep

Explain the cultural practices of single crop, Explain the Cultural Practic...

Explain the Cultural Practices of single crop Continuous cultivation of a single crop over years on the same site causes accumulation of a particular group of microbes, which d

What is the significance of the -r group in amino acid, What is the signifi...

What is the significance of the -R group (variable radical) in an amino acid molecule? The -R group, also known as a lateral chain, is the variable part of the amino acid molec

Structural variations in vertebrate kidney, Normal 0 false fa...

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

Estuaries - aquatic ecosystems, Estuaries - Aquatic Ecosystems All the...

Estuaries - Aquatic Ecosystems All the rivers and lakes ultimately drain into the sea. However, many rivers develop a highly specialised zone before joining the proper sea. Th

Explain the parts of plasma membrane, The plasma membrane consists mainly o...

The plasma membrane consists mainly of: 1. Phospholipids embedded in a protein bilayer 2. Proteins embedded in a phospholipid bilayer 3. Proteins embedded in a polymer of

Why is a balanced frequency of different alleles of a gene, Why is a balanc...

Why is a balanced frequency of different alleles of a gene in a population more useful for the survival of that population facing environmental changes? For the trait condition

How does water move in sponges, Q How does water move in sponges? What is t...

Q How does water move in sponges? What is the function of the pores in these animals? Sponges are filtering beings they make water enter their bodies by their lateral pores. Wa

Explain assessment of iron status - transferrin receptors, Explain assessme...

Explain assessment of iron status - Transferrin receptors? Transferrin receptors: As iron deficiency progresses into second stage, the number of transferrin receptors on the ce

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