Water and Aquatic Ecosystems: Worksheet



APES Unit 3 – Aquatic Ecology Review

MATCHING

1. WETLAND DOMINATED BY GRASSES AND NON WOODY PLANTS

2. precipitation that can ultimately carry pollutants into aquatic ecosystems

3. amount of dissolved salts in water

4. wetland dominated by woody plants and trees

5. area where fresh water mixes with salt water

6. limestone ridges built by tiny animals similar to jellyfish

7. located on the bottom of a body of water

8. increase in nutrients in an aquatic ecosystem

9. aquatic zone found near the shore

MULTIPLE CHOICE

10. ESTUARIES ARE PRODUCTIVE ECOSYSTEMS BECAUSE THEY CONSTANTLY RECEIVE NUTRIENTS FROM

a. rivers and oceans.

b. coral reefs.

c. lakes and ponds.

d. photosynthesis

11. Which of the following is a factor that influences where an organism lives in an aquatic ecosystem?

a. sunlight

b. nutrient availability

c. temperature

d. all of the above

_______ 12. In which of the following aquatic ecosystems are both littoral and benthic zones likely?

a. open ocean

b. coral reef

c. lake

d. none of the above

13. What is the source of most ocean pollution?

a. activities on land

b. climate changes

c. aquatic animals

d. none of the above

14. Estuaries

a. are always saltwater ecosystems.

b. are always freshwater ecosystems.

c. are ecosystems where both fresh water and salt water are present.

d. prevent the development of salt marshes.

15. All of the following are examples of saltwater ecosystems except

a. mangrove forests.

b. coral reefs.

c. salt marshes.

d. the Florida Everglades.

16. One way in which wetlands control flooding is by

a. filtering out water pollutants.

b. absorbing water from rivers.

c. providing habitats for migratory wildlife.

d. reducing the amount of carbon dioxide released into the air.

17. Which of the following is not a threat to coral reefs?

a. silt runoff c. growth of algae

b. excessive nutrients d. zooplankton

18. How do the properties of water affect aquatic ecosystems?

19. Draw a diagram of the coastal and open sea marine life zones.

20. Why are coral reefs vulnerable to damage, especially by human activities?

21. What services do estuaries and wetlands provide?

|Estuaries |Wetlands |

| | |

22. Draw a diagram of the four freshwater life zones in a lake.

23. What is the difference between an oligotrophic and a eutrophic lake?

24. What is unique about the producers in hydrothermal vent ecosystems?

-----------------------

a. swamp

b. benthic zone

c. littoral zone

d. eutrophication

e. salinity

f. runoff

g. marsh

h. coral reefs

i. estuary

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