Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Decay and Nutrient Cycling
Soil organisms are the chief agents of decay of organic matter. Decomposition and mineralisation of organic matter results in release of inorganic nutrients which can be absorbed by roots to sustain plant growth. In soil, the decomposers, that include a vast variety of bacteria, actinomycetes and fungi act on the organic matter. These organisms bring about the hydrolysis and oxidation of organic compounds through their enzymes. Complex organic compounds are broken down into simpler compounds until at last, carbon, hydrogen and oxygen are finally released as carbon dioxide and water. Other nutrients contained in the organic matter are released in inorganic form. You might recall that the conversion of nutrients present in the organic matter into inorganic form is termed as mineralisation. The whole process is as follows. Organisms like the fungi, ants, beetles, mites, slugs and snails, sometimes invade fragments of litter even before they fall on the ground. In subsequent transformations, each type of organic substance (carbohydrates, proteins and fats) as well as each stage in the breakdown of these substances, has its own specific set of saprophytes which act upon the organic material so that decay progresses by stages. For example, proteins are broken down successively into amino acids, ammonium salts, nitrites and nitrates, each step being the result of action of a different organism or group of organisms. Therefore, the process of decomposition consists of several overlapping cycles. As a result of decomposition of organic matter humus is formed. which is quite resistant to further alteration. You have already studied it earlier.
DIFFERENCE BETWEEN PLANTS AND ANIMALS - S . N o . C h a ra c ter P l an ts A n i m al s 1 Nutrition
is the have 100 nuclus ?
Which are the molecules that make possible active transport through membranes? Active transport is made by exact membrane proteins. These proteins are called "pumps" because
What is the OBJECTIVES of evaluation of patient clinical examination ? After going through this unit, you should be able to: 1. Carried out the general physics-examination; 2.
Q. What is the name of the cytoplasm division in the end of mitosis and what are the differences in this process between animal and plant cells? Cytoplasm division occurs afte
Explain the Use and Care of Microscope? Proper care and maintenance of microscope is needed. Following points should be kept in mind while handling the microscope: (i) Instr
What is the logic of the transfusional compatibility concerning the ABO blood group system? The transfusional compatibility for the ABO system takes into account the antigens s
Oxidation-reduction Potential (ORP) ORP is related to the concentration of oxidizers or reducers in a solution, and their activity or strength. It provides an indication of th
Define e-PTFE suture material The e-PTFE suture material is a nonabsorbable monofilament that has high tensile strength, good handling properties, and good knot security, but
Define Efficiency - terminologies used in chromatography? Efficiency in chromatography is expressed as number of theoretical plates. H = L/N Where, H is heigh
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd