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Energy Flow and Food Chains · NCERT Biology

In a Grazing Food Chain (GFC), which of the following represents the correct sequence of energy flow?

  1. Producers -> Primary Consumers -> Secondary Consumers
  2. Detritus -> Herbivores -> Carnivores -> Top Predators
  3. Producers -> Decomposers -> Herbivores -> Carnivores
  4. Primary Consumers -> Producers -> Tertiary Consumers
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Correct answer: Producers -> Primary Consumers -> Secondary Consumers

The GFC starts with producers (autotrophs) at the first trophic level. Energy then flows to primary consumers (herbivores) and then to secondary consumers (carnivores).

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