DEFINE , HETEROTROPHS, HOST, AND SAPROTROPHS
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HETEROTROPHS: A heterotroph is an organism that cannot manufacture its own food by carbon fixation and therefore derives its intake of nutrition from other sources of organic carbon, mainly plant or animal matter. In the food chain, heterotrophs are secondary and tertiary consumers.
HOST: An organism that is infected with or is fed upon by a parasitic or pathogenic organism (for example, a virus, nematode, fungus). ... An animal or plant that nourishes and supports a parasite; the host does not benefit and is often harmed by the association.
SAPROTROPHS: A saprophyte or saprotroph is an organism which gets its energy from dead and decaying organic matter. This may be decaying pieces of plants or animals. ... Slime moulds are also saprophytes, as well as consuming bacteria. Examples of saprophytes are cheese mold, and yeast.