Gifted species - biological nitrogen-fixation, Biology

Gifted Species - Biological Nitrogen-Fixation

Biological nitrogen fixation remains mainly confined to a few distinct nutritional types of prokaryotes, some of which are free-living while others live in symbiotic association with eukaryotic partners. This process contributes annually about 6O% to the earth's newly fixed nitrogen budget. Table shows the ranges and types of biological nitrogen fixers. They have been variously classified as free living or symbiotic (Rhizobium-legume association). Free-living can further be classified into phototrophic (Nostoc), chemotrophic (Klebsiella), aerobic (Azotobacter) or anaerobic (Chromatium) depending upon the state of existence and mode of nutrition. Agronomically the most important nitrogen fixing systems are Rhizobium-legume association, Frankia (actinorhiza1)-woody plant association, Anabaena-Azolle and Cyanobacteria-rice system. Rhizobium-legume association as you will know invariably occurs in the form of root nodules.

Table: Examples of Gifted Species

7_Gifted Species - Biological Nitrogen-Fixation.png

Posted Date: 1/17/2013 4:51:42 AM | Location : United States







Related Discussions:- Gifted species - biological nitrogen-fixation, Assignment Help, Ask Question on Gifted species - biological nitrogen-fixation, Get Answer, Expert's Help, Gifted species - biological nitrogen-fixation Discussions

Write discussion on Gifted species - biological nitrogen-fixation
Your posts are moderated
Related Questions
Q. What are the enzymes? What is the significance of enzymes for living beings? Enzymes are proteins that are catalysts of the chemical reactions. From Chemistry it is known as

What is the significance of Elastic capsule chromatophore? Specialized pigmented cells on surface of the cephalopods that, by changing their shape, expose differing amounts of

What is the mechanism that ensures Mendel's First Law of segregation?

.please i need someone who can finish the assignment today , and one reliable who will not cancel the order at last time.in regards to the assignment, the are two pages of question

State about osteogenesis Embryologically, osteogenesis may be classified as either intramembranous or endochondral. When the ossification occurs directly, it is defined as intr

Which cell count is likely to be elevated when an individual has an allergy or parasitic worms? a) Red blood cells b) Erythrocyte c) Eosinophil (pron: e-o-sin-o-fill)

Define Sample Preparation for Haemoglobin Content in Blood Wipe the index finger or middle finger with a cotton swab soaked in spirit. Prick the finger with a lancet op

Q. Texture of food product? Texture may be accessed through touch or mouth feels. When the food is placed in the mouth, the surface of the tongue and other sensitive skin react

Based on your knowledge of neoplasia, discuss biochemical methods of detecting tumors, and imaging characteristics (in your particular imaging modality) that suggest malignancy. Ex

how can i work with u as an online biology tutor?