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

Define about the carbohydrates, Define about the Carbohydrates? In the ...

Define about the Carbohydrates? In the previous unit, we came to know that availability of glucose is the major factor in exercise performance. Hence, carbohydrate manipulation

Explain transposition the great arteries with ventricular, Explain Transpos...

Explain Transposition the Great Arteries with Ventricular Scptal Defect ? Transposition of the great arteries with VSD is an indication for surgery. It is preferable to do VSD

Why is there little or no grass in the forest, Why is there little or no gr...

Why is there little or no grass in the forest? 1. Because of the presence of the bushy trees close together in the forest, sunlight does not penetrate simply to the ground. Thi

Interior of the ventricles - heart, Each ventricle has an inflow part begin...

Each ventricle has an inflow part beginning just in front of the corresponding atrioventricular orifice and running forwards to the left towards the apex of the heart. The cavity t

Glycogenesis, Glycogenesis :   This  is an anabolic process  in which  gluc...

Glycogenesis :   This  is an anabolic process  in which  glucose is polymerized  into glycogen by the   sequence of  reactions.  Since glycogenesis occur  in all  body  cells .but

What is phylum hemichordata, What is Phylum Hemichordata ? The name "he...

What is Phylum Hemichordata ? The name "hemi"; (meaning "half") provides a clue to these animals, which have some of the features of chordates, and some features that are chara

Determination of neural ectoderm by induction, Determination of Neural Ecto...

Determination of Neural Ectoderm by Induction Earlier you know that the dorsal mesoderm induces the ectoderm to differentiate into neural tissue. Spemann and his co-workers co

What is ATP which invovles in use/transfer of all cells, The use and transf...

The use and transfer of energy in all cells involves same compound, ATP. The letters ATP stand for chemical: a) Adenosine triphosphate b) Aluminum trioxide c) Atrophine t

Explain the effect on vitamins of the human milk, Explain the effect on Vit...

Explain the effect on Vitamins of the human milk? Although there are inter-individual variations in vitamin concentrations, diet and drug use by individual women influences vit

What is the major cell organelle involved in cell digestion, Q. What is the...

Q. What is the major cell organelle involved in cell digestion and what are the properties of that organelle that enable it to do the task? The organelles accountable for intra

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