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Food chain in which microorganisms breakdown the food formed by primary producers is

(a) parasitic food chain

(b) detritus food chain

(c) consumer food chain

(d) predator food chain

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(b) The dead organic matter of plant or animal is called as detritus. While a part of it remains on the soil surface as litter, the other part enters the soil. Many animals such as protozoan’s, nematodes, insects etc. depend on detritus and hence they are called as detrivores. Even the human beings are detrivores when they eat cooked food. From detritus, the chain proceeds to detrivores, then to carnivores and finally to top carnivores.

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