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

Similar organs and similar general shape be explained, How can the fact tha...

How can the fact that fishes and dolphins have similar organs and similar general shape be explained? Dolphins and Fishes have similar organs and shape because although they ha

Wound botulism, Q. Wound Botulism? It is the rarest form of botulism. T...

Q. Wound Botulism? It is the rarest form of botulism. The illness results when C. botulinum by itself or with other microorganisms infects a wound and produces toxins, which re

What are some prophylactic measures for tapeworm infections, Q. What are so...

Q. What are some prophylactic measures for tapeworm infections? The major prophylactic measures against the taeniasis and the cysticercosis are not to ingest raw or badly cooke

What is the difference among animal and bacterial cells, Concerning the pre...

Concerning the presence of the nucleus what is the difference among animal and bacterial cells? Animal cells (cells of living beings of the kingdom Animalia) have an interior m

#title., 15 character of protozoa

15 character of protozoa

Explain the solubility in water of dietary fibre, Explain the Solubility in...

Explain the Solubility in Water of dietary fibre? Fibres that dissolve in hot water are soluble and those that do not, are insoluble. Several structural features affect solubil

Movement, Movement Movement is another characteristic of living things...

Movement Movement is another characteristic of living things. It does not always mean locomotion or movement from one place to another. In animals movement is quite obvious. W

Describe the intensity of s2 in second heart, Describe the Intensity of S 2...

Describe the Intensity of S 2 in second heart ? Loud A 2 occurs in patients with hypertension, when aorta is closer to anterior chest wall owing to root dilatation or TGA or

What thiamine defiency will result in decreased activity, A thiamine defien...

A thiamine defiency will result in decreased activity of: -G-6 phosphase -transketolase -fructokinase

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