heterotrophs

Ecosystem: Introduction, component and function

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Introduction  of Ecosystem Ecology is the study of how different organisms or groups of organisms interact with their surroundings. Both biotic (living organisms) and abiotic (non-living organisms) elements make up the environment. Ecosystems are the subject of ecology. An ecosystem is a collection of organisms that communicate with one another and with their surroundings. The … Read more

Five kingdom classification and features

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The five kingdom system of classification was proposed by R.H Whittaker in 1969. This classification is based on following criteria: Complexity of cell structure- prokaryote and eukaryote. Complexity of organism’s body- unicellular and multicellular. Mode of obtaining nutrition– autotrophs and heterotrophs. Life style i.e. producers, consumers and decomposers. Phylogenetic relationship. The five kingdoms are Monera, … Read more