Energy Flow in Ecosystems
Name:____________________Per:___
1. Use the table to the right to draw a 4-member food chain.
Label the producer and levels of consumers.
Organism
cat
2. Use all of the organisms in the table to draw a food web.
Label the producer and levels of consumers.
3. Use the organisms in your food web to
fill in the energy pyramid.
4. Which level of the pyramid has the most
energy available?
Food
Source
mice, birds
shrew
worms
robin
worms, seeds
wheat
photosynthesis
mouse
wheat seeds
badger
shrews
rose
plant
photosynthesis
worm
rotting leaves
5. Where do the organisms in the bottom
layer of the pyramid get their energy?
6. Which organism in the food web is a decomposer? Why are decomposers important?
7. Which organism in the food web to the left is sometimes a first-level
consumer and sometimes a second-level consumer? EXPLAIN.
8. Choose one food chain in the web. Name all the organisms in that
chain. Start with the producer and end with the top-level consumer.
9. Draw an energy pyramid for the food chain you chose.
10. What happens to the amount of energy as it moves up each
level of the pyramid? BE SPECIFIC.