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Aquatic Ecosystems Rev. #1
Test Description: A review of freshwater and marine ecosystems.
Instructions: Answer all questions to get your test result.
1) Wetlands are important to fisheries in the United States because
A
wetlands are the easiest places to catch fish
B
wetlands are extremely fragile and are protected by many federal and state laws
C
many fish use wetlands for feeding, breeding and spawning
D
wetlands have the cleanest waters
2) Animals that live in estuaries
A
tend to have very few offspring
B
benefit from unpolluted habitats
C
are anchored to rocky shores with the help of rhizomes
D
must be adapted to varying salinity and water levels
3) Tiny animals that exrete limestone (calcium carbonate) are called
A
zooplankton
B
coral polyps
C
barnacles
D
nekton
4) What are the two main types of freshwater wetlands?
A
mangrove and salt
B
swamp and marsh
C
salt and brackish
D
open and shallow
5) What is the largest estuary in the United States?
A
Great Barrier Reerf
B
New York Harbor
C
Everglades
D
Chesapeake Bay
6) What is one way that coral reefs may be damaged?
A
reef erosion caused by high tides
B
by large marine predators
C
excessive sunlight resulting in rapid build-up of phytoplankton
D
by freshwater mixing in with the salt water
7) Which of the following is classified a marine ecosystem?
A
polar ecosystems
B
coastal wetlands
C
All the above
D
coral reefs
8) How deep does light penetrate into the ocean water?
A
about 1.5 miles
B
all the way to the bottom
C
about 100 m (330 ft)
D
a few inches
9) Which of the following is not an example of zooplankton?
A
very small jelly fish
B
algal blooms
C
larvae of fish, oysters and clams
D
microscopic shrimp
10) Which ocean zone is the habitat to mostly decomposers and scavengers?
A
the open ocean surface
B
the shallow coastal waters
C
the sandy ocean shore
D
the deep ocean (including the ocean floor)
*select an answer for all questions
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