ENERGY FLOW THROUGH
ECOSYSTEMS
Name: ______________________________________
Date: __________________________
Period: _________
8.11A describe producer/consumer, predator/prey, and parasite/host relationships as they occur in food webs within marine, freshwater,
and terrestrial ecosystems
Part 1: VOCABULARY PRACTICE:
Instructions: Define the following words in your own words.
1. PRODUCER
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2. PRIMARY CONSUMER:
______________________________________________________________________________________
3. SECONDARY CONSUMER:
______________________________________________________________________________________
4. TERTIARY CONSUMER:
______________________________________________________________________________________
5. HERBIVORE:
______________________________________________________________________________________
6. CARNIVORE:
______________________________________________________________________________________
7. OMNIVORE:
______________________________________________________________________________________
Instructions: Use the word bank to fill in the blanks for each passage. Some words may not be used. Some words may be
used more than once.
Word Bank
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Energy
Webs
Producers
Chains
Heat
Primary
Tertiary
Decomposers
Bottom
Top
Molecules
Secondary
Use
Eat
Food
PART 2: ENERGY PYRAMIDS
Instructions: Create an energy pyramid using the food chain below by writing the names of the organisms on the correct
level of the pyramid. Then write the correct label on each arrow.
1. What is the ultimate source of energy for the pyramid?
__________________________
2. What process is used by the organisms at the bottom to transform radiant energy into food?
__________________________
3. What type of energy is given off as energy is transferred between trophic levels in the pyramid?
__________________________
4. How do the number of organisms compare at the bottom of the pyramid to the top of the pyramid?
__________________________
5. Describe the predator-prey relationship.
6. Describe the parasite-host relationship.
7. In what ways are the predator-prey relationship and the parasite-host relationship similar?
8. Compare and contrast food chains and food webs using the Venn diagram.
Terrestrial food Web
6. Describe every predator/prey relationships in the
terrestrial food web.
7. Describe every producer/consumer relationships in
the food web.
8. Add fleas to the food web.
9. Describe how fleas would interact with the
organisms in the food web. Review the TEK on the
front page to make sure you include the best
vocabulary possible.