Aquatic Ecosystems Worksheet
Explore the fascinating world of aquatic ecosystems, including freshwater and marine environments, their characteristics, and the organisms that inhabit them.
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Aquatic Ecosystems Exploration
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Read each question carefully and answer to the best of your ability. Good luck!
1. Which of the following is NOT a type of aquatic ecosystem?
Ocean
River
Desert
Lake
2. What is the primary difference between freshwater and marine ecosystems?
Temperature
Salinity
Depth
Location
3. The zone in an ocean where sunlight can penetrate is called the zone.
4. Organisms that live on the bottom of an aquatic ecosystem are called .
5. A body of flowing freshwater that moves towards an ocean or lake is a .
6. All marine organisms can tolerate a wide range of salinity.
True
False
7. Ponds and lakes are examples of standing freshwater ecosystems.
True
False
8. Describe two abiotic factors that influence life in an aquatic ecosystem.
9. Explain the importance of estuaries as aquatic ecosystems.
10. Observe the pond ecosystem diagram below and answer the questions.

a) Identify one producer shown in the pond ecosystem.
b) Identify one consumer shown in the pond ecosystem.