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Oceans
Test Description: Oceans
Instructions: Answer all questions to get your test result.
1) Fish use their gills to get _____ from the water.
A
plankton
B
oxygen
C
salt
D
carbon dioxide
2) Which type of aquatic ecosystem is formed from the calcium carbonate shell secreted by animals?
A
seamount
B
coral reef
C
estuary
D
lake
3) Animals with gills live ________
A
in deserts
B
in trees
C
on mountains
D
in water
4) Which feature is needed in order for a pond animal to obtain oxygen from the water?
A
scales
B
fins
C
gills
D
lungs
5) The part of the ocean where the water is too deep for sunlight to penetrate to the bottom is called the _____zone.
A
littoral
B
eutrophic
C
aquatic
D
benthic
6) In an ocean ecosystem, the greatest diversity of organisms is found:
A
at the surface
B
in a coral reef
C
near the bottom
D
near a shoreline
7) Which of the following would be found at the bottom of an aquatic food chain
A
coral
B
minnows
C
water
D
phytoplankton
8) Aquatic ecosystems are classified based on the salinity of the water. These two ecosystems are:
A
wetland and freshwater
B
marine and swamp
C
brackish and marine
D
freshwater and marine
9) Which aquatic biome consists of a mix of fresh water and salt water?
A
an estuary
B
a lake
C
a mountain stream
D
the ocean
10) What marine ecosystem is built by tiny animals called polyps?
A
ocean
B
estuary
C
mangrove swamp
D
coral reef
*select an answer for all questions
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