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