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1.
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It starts from the living green plants i.e. producers occupying the first trophic level.
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It starts from the dead organic matter and decomposers called detritivores as the first trophic level.
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2.
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A much less fraction of energy flows through this type of food chain.
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A much larger fraction of energy flows through this type of food chain.
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3.
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It binds to inorganic nutrients.
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It releases the inorganic nutrients bound in organic matter
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4.
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It is directly dependent on the influx of solar radiation.
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Energy for the food chain comes from the organic wastes, exudates and dead matter termed as detritus.
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