REVISION

• A food chain shows how living things feed on other living things. It shows the food relationship among the organisms in a habitat.
• Plants are the basis of food chains because they can obtain energy directly from the Sun to make food.
• A food chain starts with a producer, followed by consumers in the subsequent levels.

• Producer(green plant)-Consumer 1(herbivore, omnivore)-Consumer 2(carnivore)-Consumer 3 (carnivore).
• Carnivores depend indirectly on plants for food. They eat herbivores or omnivores that feed on plants.
• A food web is made up of several food chains.
• A food web maintains a balance in nature by regulating the number of organisms in a habitat.  

Try Yourself

Complete the sentences below by filling in the blanks with the words given.

Plants are ____________________or ___________________sources of food for all consumers. There are three types of consumers:____________________, ____________________,and ______________________. A food _________________ shows the food relationship between different organisms. A food _______________is made up of a network of food chains.

( web   carnivores   indirect   herbivores   direct   chain   omnivores)