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Q: Which of the following is the second trophic level of the food chain?
  • A. Grass
  • B. Rat
  • C. Snake
  • D. Eagle
Correct Answer: Option B - The second trophic level has primary consumers called heterotrophs. These organisms have to consume producers to incorporate their energy into their own biomass. They cannot make their own food from light or chemicals. The third trophic level has secondary consumers, which are heterotrophs that eat other consumers e.g., rat, buffalo etc.
B. The second trophic level has primary consumers called heterotrophs. These organisms have to consume producers to incorporate their energy into their own biomass. They cannot make their own food from light or chemicals. The third trophic level has secondary consumers, which are heterotrophs that eat other consumers e.g., rat, buffalo etc.

Explanations:

The second trophic level has primary consumers called heterotrophs. These organisms have to consume producers to incorporate their energy into their own biomass. They cannot make their own food from light or chemicals. The third trophic level has secondary consumers, which are heterotrophs that eat other consumers e.g., rat, buffalo etc.