1. Which organisms contain chlorophyll? Are they producers or consumers? How do you know?
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2. Which organisms feed on algae? ___________________________________________________
3. Which organisms feed on fish? _____________________________________________________
4.
5. Which organisms are decomposers? What do they do? Indicate where they fit in your food web.
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6. Provide three different explanations for the observations below.
OBSERVATION
EXPLANATIONS
1.
Diving Beetle population decreases
2.
3.
1.
Duck population increases
2.
3.
1.
Water Ribbon population remains constant while
2.
Black Swan population decreases
3.
7. What would happen to the population of heron if there were no more frogs?
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8. Why?
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9. What would happen to the population of Diving Beetles if there were no more Swamp Hens?
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10. Why?
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11. Which is more important to this ecosystem: Algae or the Water Boatman? _________________
12. Why? _________________________________________________________________________
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