Food Chains Information about Food Chains Food producing organisms, such as green plants, are called producers .
Producers are organisms, such as green plants, that convert light energy into food.
Plants are the first part of the food chain and so are called producers . Animals that eat only plants are herbivores and, on the food chain, are called primary consumers. An animal that eats a primary consumer is called a secondary consumer . Animals that eat secondary consumers are called tertiary consumers . Animals that eat only grasses and shrubs are called herbivores .