Food Chains & Food Webs (Generation Genius)Online version Test your understanding of energy flow in ecosystems. by Vijo Gor 1 What is a food chain? a A group of animals that hunt together b A web made of many connections c A circle of plants and animals d A sequence showing who eats whom 2 Why do we use food webs instead of food chains? a They do not include plants b They are shorter c They are easier to draw d They show all feeding relationships and are more accurate 3 Where does all the energy in a food web originally come from? a The soil b The air c The water d The sun 4 What is a producer? a An animal that eats plants b A plant that makes its own food with sunlight c An animal at the top of the food web d A decomposer 5 What are consumers? a Living things that produce their own food b Only carnivores c Living things that eat other organisms d Only herbivores 6 What do the arrows in a food web show? a The animals that live in the same habitat b The animals that are friends c The order animals are born d The direction energy is transferred 7 What is an apex predator? a An animal that eats only plants b An animal that is always the biggest c A plant at the start of the food chain d An animal at the top of the food web with no predators 8 Which of these is an example of an apex predator? a Lion b Earthworm c Grass d Zebra 9 What happens if an apex predator is removed from an ecosystem? a Plants stop photosynthesizing b Prey populations grow too much and ecosystem becomes unbalanced c Decomposers disappear d Nothing changes 10 What is the role of decomposers in a food web? a To store food for other animals b To stop predators from eating too much c To recycle nutrients by breaking down dead organisms d To produce energy from the sun 11 Which living things are common decomposers? a Lions and owls b Grass and trees c Zebras and hyenas d Bacteria and fungi 12 Why are decomposers important for ecosystems? a They eat plants and animals b They turn dead matter into nutrients for soil c They keep animals from starving d They are apex predators 13 What do zebras eat and who eats zebras? a Zebras eat grass; lions and hyenas eat zebras b Zebras eat meat; snakes eat zebras c Zebras eat insects; owls eat zebras d Zebras eat trees; decomposers eat zebras 14 What do animals get when they eat other animals? a Energy and building blocks b Vitamins only c Nothing d Water only
