What is the difference between the food habits of organisms belonging to the first and the third trophic levels? Give one example each of the organisms belonging to these two trophic levels.

The organisms at first trophic level in a food chain are producers, always. They are autotrophs, they make their own food. For example- Plants are producers

The organisms at third trophic level in a food chain are consumers. They are carnivores at third trophic level. They feed on herbivorous animals. For example frog feeds on insects.


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