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WorksheetsEnv Sci, Chapter 7, Aquatic Ecosystems, Review
Total questions: 50
Worksheet time: 26mins
Name
Class
Date
1.
Microscopic drifting organisms that perform photosynthesis; they form the base of most aquatic food chains.
a)
Plants
b)
Zooplankton
c)
Crustaceans
d)
Phytoplankton
2.
Aquatic ecosystems contains several types of organisms that are grouped by
a)
Sunlight & Temperature
b)
Salinity & Nutrients
c)
Oxygen & Nutrients
d)
Location & Adaptation
3.
What is the source of most ocean pollution?
a)
Activities on land
b)
Climate change
c)
Aquatic animals
d)
None of the above
4.
Which is not an environmental function of freshwater wetlands?
a)
Filter pollutants
b)
Reducing carbon dioxide released into the air
c)
Habitat for diversity of species
d)
Control flooding
5.
Which is not a saltwater ecosystem?
a)
Mangrove swamps
b)
Salt marshes
c)
Florida Everglades
d)
Coral reefs
6.
Which is not a major threat to the ocean?
a)
Plastic pollution
b)
Algal growth
c)
Climate change
d)
Overfishing
7.
Wetlands that are dominated by woody plants
a)
Salt Marsh
b)
Estuary
c)
Brackish Marsh
d)
Swamp
8.
An increase in the amount of nutrients in an aquatic ecosystem that results in a large amount of algal growth.
a)
Estuary
b)
Zooplankton
c)
Eutrophication
d)
Phytoplankton
9.
Mangrove trees grow
a)
Along riverbanks
b)
In freshwater wetlands
c)
In tropical and subtropical areas
d)
In the benthic zone of lakes
10.
What are the 3 types of wetlands?
a)
swamp, ocean, river
b)
pond, river, marsh
c)
marsh, marsh, marsh
d)
swamp, marsh, bog
11.
A habitat in which the fresh water of a river meets the salt water of the ocean.
a)
estuary
b)
swamp
c)
marsh
d)
fen
12.
A shallow zone in a freshwater habitat where light reaches the bottom. It's the most biologically diverse location in a lake.
a)
limnetic zone
b)
profundal zone
c)
littoral zone
d)
benthic zone
13.
What is the name of the point where a river ends (where river meets ocean)?
a)
Tributary
b)
Water Shed
c)
Confluence
d)
Mouth of the River
14.
Sharks, dolphins, turtles, and other strong swimmers are called...
a)
plankton
b)
nekton
c)
benthos
d)
rethos
15.
In a freshwater ecosystems, organisms are adapted to changes in...
a)
water depth
b)
temperature
c)
salinity
d)
all of the above
16.
What is the term for a low, flat area that experiences regular flooding?
a)
wetland
b)
estuary
c)
lake
d)
coral reef
17.
What is the term for a coastal wetland that features trees with tall roots?
a)
salt marsh
b)
freshwater swamp
c)
mangrove swamp
d)
freshwater marsh
18.
What is the term for a highly productive brackish ecosystem with a nutrient trap?
a)
wetland
b)
river
c)
ocean
d)
estuary
19.
Artificial eutrophication results from overuse of...
a)
fertilizers
b)
pesticides
c)
household chemicals
d)
organic farming
20.
Crayfish, mussels, and catfish are all examples of...
a)
plankton
b)
nekton
c)
benthos
d)
turthos
21.
In lakes, what area near the shore features rooted plants and abundant life?
a)
benthic zone
b)
open water
c)
littoral zone
d)
continental shelf
22.
Sharks, dolphins, turtles, and other free swimmers are called...
a)
plankton
b)
nekton
c)
benthos
d)
rethos
23.
Bleaching can result if this sensitive ecosystem is damaged.
a)
estuary
b)
arctic
c)
coral reef
d)
freshwater swamo
24.
Which grassy coastal wetland can stand regular changes in water depth?
a)
salt marsh
b)
mangrove swamp
c)
freshwater marsh
d)
freshwater swamp
25.
Organisms that cannot fight a current are called...
a)
plankton
b)
nekton
c)
benthos
d)
hekton
26.
In an estuary, animals are adapted to changes in...
a)
water depth
b)
temperature
c)
salinity
d)
all of the above
27.
What resource do bacteria in eutrophic lakes use that leads to a fish kill?
a)
heat
b)
water
c)
oxygen
d)
carbon dioxide
28.
Tropical and subtropical swamps feature...
a)
grasses
b)
cattails
c)
mangrove trees
d)
cacti
29.
Which of these aids the growth of coral?
a)
oil spills
b)
sewage
c)
pesticides
d)
phytoplankton
30.
At their mountain headwaters, rivers are...
a)
warm
b)
slow
c)
high in nutrients
d)
low in oxygen
31.
The major abiotic factors that influence aquatic ecosystems include
a)
water temperature and amount of light
b)
plants and animals
c)
water and plants growing there
32.
Wetlands have high species diversity.
a)
false
b)
true
33.
One of the benefits of wetlands, is that they can
a)
replace lakes and ponds
b)
filter pollutants out of water
c)
provides land for housing developments
34.
Important limiting factors in streams and rivers include
a)
amount of oxygen
b)
temperature of water
c)
all of the above
35.
Organisms in estuaries must be able to survive
a)
frequent dry conditions
b)
high winds
c)
changing salt levels
36.
Salt water is denser than fresh water. What ecosystem is most affected by this fact?
a)
lake
b)
river
c)
stream
d)
estuary
37.
Which is a fresh water ecosystem?
a)
river
b)
estuary
c)
ocean
38.
The area between the highest high tide line and the lowest low tide line.
a)
Intertidal Zone
b)
Neritic Zone
c)
Deep Zone
39.
Microscopic algae and protozoa that float and drift in a body of water...
a)
Nekton
b)
Parasite
c)
Plankton
40.
The general word for an area of land that acts like a sponge and has wet soil and is underwater at some point during the year...
a)
Wetland
b)
Mangrove
c)
Taiga
41.
A type of wetland that is wet and spongy and has mostly grasses and reeds, but NO trees...
a)
Swamp
b)
Marsh
c)
Bog
42.
A type of wetland having a growth of TREES along with other vegetation..
a)
Swamp
b)
Marsh
c)
Bog
43.
A type of wetland where the soil is composed mainly of decayed plant matter and also forms a pool of water when the ice and snow melt in cold regions...
a)
Swamp
b)
Wetland
c)
Bog
44.
Tropical trees that grow in wetland areas and have roots with breathing pores...
a)
Coniferous
b)
Mangroves
c)
Tussocks
45.
A habitat in which the fresh water of a river meets the salt water of the ocean...thought of as the ocean's nursery...
a)
Headwaters
b)
Tributary
c)
Estuary
46.
What usually has more oxygen and life in it..Cold or Warm Waters??
a)
Warm Water
b)
Cold Water
47.
Free swimming organism
a)
Nekton
b)
Plankton
c)
Benthos
d)
Decomposer
48.
Amount of dissolved salt
a)
estuary
b)
eutrophication
c)
salinity
d)
runoff
49.
Bottom dwellers such as mussels
a)
Nekton
b)
Decomposer
c)
Plankton
d)
Benthos
50.
Which of the following is not a freshwater ecosystem?
a)
Lake
b)
Ocean
c)
River
d)
Stream
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