The first organism in the food chain cannot cannot feed on other organisms and is called a producer because it makes its own food.Green plants are an example of a producer.The use(-)that is, the process of turning carbon dioxide and water into organic compounds using energy from sunlight.These organic compounds are found in various parts of the plant such as the leaves,fruit,and roots,and are a source of energy for the organism in the next step in the chain, a consumer.