They are autotrophs, which means that they make their own food. The next circle of the web consists of the primary consumers, or herbivores, which eat plants. The next layer of the web is the se condary consumers, or carnivores, which eat the primary consumers. Both primary and secondary consumers are called heterotrophs. This is because they do not make their own food, but must rely on another source for food.
Some organisms eat both plants and animals.
They are called omnivores, because they eat whatever is available. These include bears, coyotes, and people. Ask students if they like to eat plants. Most children do not think of their food, even fruits and vegetables, as plants, so this should stimulate some discussion. Ask students to name plants that they like to eat as they think of them.