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ECOSYSTEMPlants, animals and human beings live in association with a wide variety of other plants and animals. These communities of organisms are not mere ad boc collections of individuals or populations but they represent a highly ordered dynamic and complex organisation. Such complex natural organisation with their living and non-living environments that controls them and from which the living organisms derive their sustenance are technically called as "ecosystem" or an "ecological system".The interaction between living organisms and their environment is very much a two way process: organisms affect and are in turn affected by their surroundings. Professor Arthur Tansley, a British botanist, in 1935 proposed the term ecosystem and defined it as the "system resulting from the integration of all living and non-living factors of the environment". He regarded ecosystem as nQt only the organism complex but also the whole complex of physical factors forming the environment.The concept of this interacting system has proved extremely valuable and the ecosystem is regarded as a basic unit for ecological studies.
Q. Learning objectives of gastrointestinal disease? • explain the disease conditions, causes, complications of the disorders of the gastrointestinal tract, • discuss the ef
Define Methods for Determining the Amount of Microbes in Food? Following methods can be employed for determining the amount of microbes in the food samples and analyzing their
What is the Importance of pantothenic acid One of the active forms of pantothenic acid is coenzyme A, which is involved in numerous metabolic functions. It is involved in t
Vascular Cambium The vascular cambium usually, if not always, has a dual origin within the primary tissues; from provascular strands, and from the "ground" meristem tissues be
Is the bacterium MRSA pathogenic or non-pathogenic? MRSA bacteria are pathogenic. This group of bacteria belongs to Staphylococcus aureus family, which have grown resistant to
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Scanning Electron Microscopy (SEM) While 'TEM is useful to study the internal structul-c of thc ccll. SEM is an important technique if you wish to examine the surl'ace features o
regenerstion in invertebrates
Q. Duration limit of the QRS? The duration of the QRS is usually reduced slightly during exercise. Because catecholamines increase conduction velocity in the Purkinje fibers an
SHARPS : Cuts due to careless handling of sharps such as sectioning razors, microtome blades etc. are probably the most common cause of injury in the biology lab. The only real re
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