Dead animal →Blow fly maggots → Common frog → Snake
A
Decomposer food chain
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B
Detrital food chain
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C
Grazing food chain
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D
Predator food chain
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Solution
The correct option is B
Detrital food chain
Detritus food chain starts with dead and decaying organic matter like dead animals. Maggots are the primary consumers feeding directly on the detritus, these are eaten by frogs which are the secondary consumers and snake is the tertiray consumer feeding on the frog (secondary consumer). Unlike the detritus food chain, grazing food chains begin with green plants.