TEST NAME: Ecosystem Review
TEST ID: 641055
GRADE: 05
SUBJECT: Life and Physical Sciences
TEST CATEGORY: My Classroom
Ecosystem Review
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Student: Class:
Date:
1. Bluebirds prefer to live near open, grassy places. Where would you most likely find a bluebird?
A.
a dam
B.
a beach
C.
a ball field
D.
a parking lot
2.
Which best describes a lake ecosystem?
A.
contains only salt water
B.
contains only freshwater
C.
contains both freshwater and salt water
3.
Which ecosystem contains the largest mammals?
A.
ocean
B.
pond
C.
river
D.
swamp
4.
Which best describes a forest ecosystem?
A.
an ecosystem with various trees, shrubs, diverse animals, and
adequate rainfall
B.
an ecosystem with freshwater surrounded by land and includes a
variety of animals
C.
an ecosystem with only grass, fertile soil, and varying temperatures
depending on location 5.
How are a salt water marsh and a lake most similar?
A.
They both have diverse organisms.
B.
They both are near the ocean.
C.
They both have salt water.
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6.
Which is true of a tropical rainforest?
A.
They are found only in South America.
B.
Only a few different species of plants and animals can be found there.
C.
The tree canopy causes only a small amount of sunlight to reach the
ground.
D.
Each organism found in a rainforest can also be found in a deciduous
forest.
7.
Which type of ecosystem best removes pollutants from water?
A.
forest
B.
desert
C.
estuary
D.
grassland
8. Mangrove trees have shallow roots that start above ground. These roots filter out salt so the tree can
receive fresh water.
Based on this information, in which area are mangroves best suited to grow?
A.
a grassy field
B.
a coastal area
C.
a sandy desert
D.
a rocky mountain
9.
Which statement best describes how ponds and lakes are similar?
A.
The temperature of the water increases as depth increases.
B.
Most organisms live in the deepest part of the bodies of water.
C.
More plant life is found in the shallow areas of lakes and ponds.
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10.
Which are the most common ecosystems in North Carolina?
A.
estuary, grassland, rainforest
B.
deciduous forest, estuary, ocean
C.
grassland, ocean, temperate forest
D.
deciduous forest, ocean, desert
11.
How are the tropical rain forest and pond ecosystems similar?
A.
They both have large amounts of trees. B.
They both have producers and consumers. C.
They both have the same plants and animals.
12.
What is the difference between an ocean ecosystem and a lake
ecosystem?
A.
Ocean ecosystems have less plant life than lake ecosystems.
B.
Ocean ecosystems have less animal life than lake ecosystems.
C.
Ocean ecosystems have saltwater and lake ecosystems have
freshwater.
13.
How are estuary and ocean ecosystems similar?
A.
They both have rich soil.
B.
They both contain salt water.
C.
They both support a lot of plant life.
D.
They both have extremely cold temperatures.
14. Where are fern plants most likely to grow?
A.
in a desert
B.
along a river
C.
at the bottom of an ocean
D.
in the middle of a prairie
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15.
Compared to the large number of plant species found in a forest
ecosystem, which best explains why a desert ecosystem is unable to
support a greater variety of plants?
A.
A desert ecosystem is located too high above sea level for most
plants to grow.
B.
There are fewer animals in a desert, which decreases the need for
large varieties of plants.
C.
There is not enough space available in a desert ecosystem for some
plant varieties to grow.
D.
Most plants that live in a desert ecosystem must be able to conserve
water for long periods of time.
16.
Which statement best compares forest ecosystems to grassland
ecosystems?
A.
Forest ecosystems have higher average temperatures than grassland
ecosystems.
B.
Forest ecosystems receive more precipitation than grassland
ecosystems.
C.
Grassland ecosystems receive more precipitation than forest
ecosystems.
17.
In which ecosystem would both algae and tadpoles most likely be found?
A.
pond
B.
ocean
C.
tide pool
D.
coral reef
18.
Which best describes most estuaries?
A.
They are natural water purification systems. B.
They provide freshwater for plants and animals. C.
They are areas that prevent ocean water from coming inland. D.
They provide soil that has not been affected by pollution.
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19.
Which best completes the graphic organizer?
A.
estuary B.
creek
C.
river
20.
Joey was walking through a forest when he looked up and saw a monkey
being chased by a panther. Which type of forest was he most likely
visiting?
A.
rainforest
B.
deciduous forest
C.
coniferous forest
21.
Which terrestrial ecosystem has warm, humid conditions and a large
variety of plants and animals?
A.
estuary
B.
grassland
C.
deciduous forest
D.
tropical rainforest
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22. What do all these ecosystems have in common?
Four Ecosystems
reef
pond
marsh
prairie
A.
fish
B.
sunlight
C.
salt water
D.
tall grasses
23.
Which type of predator most likely lives in an area with a wheat field like the one in the picture?
A.
alligator
B.
fox
C.
lion
D.
otter
24.
In which ecosystem can the greatest variety of organisms be found?
A.
lake
B.
estuary
C.
rainforest
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25. Clara says that her school is in a desert. Which fact about her schoolyard most helps her claim?
A.
The schoolyard has few trees.
B.
The schoolyard has rocks and sand.
C.
The schoolyard gets warm in the summer.
D.
The schoolyard gets little rain during the year.
26.
Which best describes grasses, shrubs, and trees?
A.
consumers
B.
decomposers
C.
omnivores
D.
producers
27.
Which best describes the role of decomposers in an ecosystem?
A.
Decomposers eat consumers and pass along energy.
B.
Decomposers eat scavengers and pass along energy.
C.
Decomposers get energy from the sun to help producers.
D.
Decomposers get energy by breaking down decaying matter.
28.
Which best explains how decomposers benefit an ecosystem?
A.
They increase dead organisms within the food chain.
B.
They create food for producers within the food chain.
C.
They break down dead organisms within the food chain.
D.
They supply consumers with food within the food chain.
29. A brown bear eats a variety of foods including berries, insects, and small animals. Which best describes a
brown bear?
A.
producer
B.
herbivore
C.
carnivore
D.
omnivore
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30.
In a forest ecosystem, which has the most direct access to the main
energy source?
A.
producer
B.
consumer
C.
scavenger
D.
decomposer
31.
Which best describes how decomposers help support life in an
ecosystem?
A.
Decomposers provide a habitat in the ecosystem.
B.
Decomposers add producers to the ecosystem.
C.
Decomposers provide energy for consumers.
D.
Decomposers add nutrients to the soil.
32. Living organisms have a role in weathering and erosion in the ecosystem. Which statement describes the
role of bacteria and fungi?
A.
They hold soil in place during high winds.
B.
They decompose organic matter in the soil.
C.
They increase water access and flow and help aerate the soil.
D.
They grow within cracks of rocks, breaking the rock into small pieces.
33.
Which describes a consumer?
A.
an organism that produces its own food
B.
an organism that produces its own energy
C.
an organism that cannot produce its own food
D.
an organism that releases energy to other organisms
34.
Which group lists only decomposers?
A.
tadpoles, frogs, and algae
B.
detritus, crayfish, and turtles
C.
bacteria, earthworms, and fungi
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35.
Which statement best describes producers?
A.
Producers in water ecosystems are mainly algae.
B.
Producers in land ecosystems are mainly grasses.
C.
Producers in both water and land ecosystems are mainly trees.
D.
Producers in both water and land ecosystems are mainly green plants.
36.
Which is the most important effect of decomposers recycling dead plants
and animals?
A.
The process prevents bad odors.
B.
The process adds nutrients to soil.
C.
The process removes objects from Earth.
D.
The process produces food for consumers.
37.
In a forest ecosystem, which would be most helpful in speeding up the
rate of decomposition?
A.
a decrease in moisture
B.
an increase in temperature
C.
a decrease in the size of an organism
D.
an increase in the amount of nutrients being recycled
38.
Bacteria are released into the Gulf of Mexico to help clean up an oil spill.
What role do the bacteria serve in the marine ecosystem?
A.
decomposers
B.
consumers
C.
producers
D.
predators
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39.
In a food web, how are consumers most often described?
A.
by their size
B.
by their color
C.
by the food they eat
D.
by the way they move
40.
Which type of organism eats only plants?
A.
carnivore
B.
herbivore
C.
producer
D.
scavenger
41.
Which organisms would be affected first if the amount of light were
reduced in an ecosystem?
A.
producers
B.
herbivores
C.
consumers
D.
carnivores
42.
Tyler is classifying organisms according to their source of energy. Based on the
food chain below, which organism would be considered a carnivore?
A.
ant
B.
bird
C.
maple leaf
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43.
Which best describes the role of a tiny plant in a coral reef ecosystem?
A.
It is the start of many coral reef food chains.
B.
It provides food and shelter to large predators.
C.
It must get food energy from a source other than the sun.
D.
It is a direct source of energy for all of the animals in the ecosystem.
44.
Which organism plays an important role in recycling nutrients back into
the environment?
A.
bacteria
B.
algae
C.
wolf
D.
tree
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45.
An energy pyramid shows that less food and energy is available moving
from the bottom to the top. Based on this model, where would producers be located on the energy
pyramid?
A.
Level 1
B.
Level 2
C.
Level 3
D.
Level 4
46.
Which group of organisms are consumers?
A.
bacteria, fungi, and mushrooms B.
cactus, fern, and maple tree
C.
deer, rabbit, and squirrel
D.
moss, protist, and algae
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47.
Which best describes a producer?
A.
a plant that makes its own food
B.
an organism that gets its energy from plants
C.
the sun because it provides energy for plants
D.
an organism that gets its energy from animals
48.
Which best describes the role of both mushrooms and worms in an
ecosystem?
A.
They provide food for carnivores.
B.
They provide food for herbivores.
C.
They provide nutrients for the soil.
D.
They provide nutrients during photosynthesis.
49. An ecosystem is a community of organisms interacting with their physical environment. Why are
decomposers an important part of ecosystems?
A.
They break down dead organisms to return nutrients to the soil.
B.
They produce their own food for survival.
C.
They play a role in preventing weathering and erosion.
D.
They provide most of the energy to consumers.
50.
Where do decomposers work the fastest to recycle organic material?
A.
in the desert
B.
in the tundra
C.
in the rainforest
D.
in the mountains
51.
Which is most likely to happen if an ecosystem does not receive sunlight
for a long time?
A.
All living organisms would eventually die.
B.
The number of plants would be increased.
C.
All living organisms would eventually adapt.
D.
The number of herbivores would be increased.
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52. Noah visited a park that had many oak trees. Which best describes the role of an oak tree in its ecosystem?
A.
Oak trees can live for a long time.
B.
Oak trees have leaves that change colors.
C.
Oak trees have strong branches and trunks.
D.
Oak trees are a source of food and shelter for animals.
53.
Which is one way earthworms improve the ability of most plants to
survive in their habitats?
A.
They improve the quality of the soil.
B.
They provide more water for the soil.
C.
They increase the temperature of the soil.
D.
They fight diseases that occur on plant roots.
54.
In a grassland ecosystem, lions prey on wildebeest. The population of
lions has declined steadily because of illegal hunting. What will most
likely happen to the population of wildebeest?
A.
The wildebeest population will increase.
B.
The wildebeest population will decrease.
C.
The wildebeest population will remain the same.
55.
Which is most likely an effect of construction on a forest ecosystem?
A.
Construction will decrease the amount of sunlight for the ecosystem.
B.
Construction will increase the amount of food for organisms in the
ecosystem.
C.
Construction will increase the number of trees and smaller plants
growing in the ecosystem.
D.
Construction will decrease the amount of natural cover and nesting
places for organisms in the ecosystem.
56. A group of frogs live together near a small pond. The frogs compete with each other most for which
resource?
A.
air
B.
insects
C.
plants
D.
sunlight
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57.
When is an ecosystem able to best support a variety of organisms?
A.
when only one type of shelter is available
B.
when organisms share food and habitats equally
C.
when organisms use the parts of the ecosystem differently
D.
when there is a high level of competition for food among organisms
58.
Which best explains why sunlight is important in an ecosystem?
A.
Sunlight is the main source of food in an ecosystem.
B.
Sunlight helps the animals in the ecosystem to mate.
C.
Sunlight provides energy for producers in the ecosystem.
D.
Sunlight heats the soil to increase the nutrients for the consumers.
59.
Which best explains why predators need other animals within an
ecosystem?
A.
They depend on them for food.
B.
They depend on them for water.
C.
They depend on them for protection.
D.
They depend on them for competition.
60.
Which would most likely cause a decrease in the predator population in
an ecosystem?
A.
an increase in the types of plants in the ecosystem
B.
a decrease in the prey population in the ecosystem
C.
an increase in the height of trees in the ecosystem
D.
a decrease in the types of decomposers in the ecosystem
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61.
Which will most likely happen to the grasshopper population if the grass
population decreases?
A.
The grasshopper population will increase because there will be less
competition.
B.
The grasshopper population will decrease because there will be less
food available.
C.
The grasshopper population will increase because there will be more
food available.
D.
The grasshopper population will decrease because there will be an
increase in the predator population.
62.
Which is the best evidence of the quality of soil composition in a forest
environment?
A.
Decomposers have few dead organisms to eat.
B.
Consumers are able to eat a variety of soil organisms.
C.
Producers are able to easily remove nutrients from the soil.
D.
Scavengers have access to soil nutrients created by decaying
organisms.
63.
Which best describes the role of litter in an ecosystem?
A.
Litter causes landfills to fill up more quickly.
B.
Litter is a pollutant that can harm living things in an ecosystem.
C.
Litter provides natural habitats for certain organisms in an
ecosystem.
64. The seed shown grows on a short plant. The seed is covered by small points that can stick to other objects.
Which will most likely transport this seed to a new location?
A.
flowing water
B.
the pull of gravity
C.
the wind blowing
D.
being carried by an animal
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65.
In a grassland ecosystem, lions prey on wildebeest. The population of
wildebeest has declined steadily because of hunting. What will most
likely happen to the lion population?
A.
The lion population will increase.
B.
The lion population will decrease.
C.
The lion population will remain the same.
66.
Which best describes an ecosystem?
A.
a kingdom of animals
B.
all the life on a specific continent C.
a community of plants and animals
67. Aphids are tiny insects that feed on the leaves of garden plants. As the aphids eat, they leave behind a sticky
substance called honeydew. Honeydew attracts a fungi called sooty mold. When the sooty mold covers the
leaves, it affects how the plant makes its food.
Ladybugs eat aphids. If ladybugs eat all the aphids in a garden, which will most likely increase over time?
A.
the number of ladybugs
B.
the amount of honeydew
C.
the amount of sooty mold
D.
the number of garden plants
68. Which two organisms in the food chain shown below are carnivorous?
A.
grass and mice
B.
mice and snakes
C.
hawks and grass
D.
snakes and hawks
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69.
Which best describes the importance of photosynthesis in an ecosystem?
A.
It allows plants to create energy and pass it along to other members
of the ecosystem. B.
It allows animals to create energy and pass it along to other
members of the ecosystem.
C.
It allows decomposers to create energy and pass it along to other
members of the ecosystem.
70. Which pair of organisms benefits each other the most?
A.
birds building a nest in a bush
B.
worms eating the roots of a plant
C.
squirrels burying seeds from a tree
D.
deer scraping their antlers on a tree
71.
Which would be most directly affected by a reduction in nutrients in the
soil?
A.
sunlight B.
abiotic factors
C.
plant community 72.
Why is the presence of insects in a rain forest ecosystem important?
A.
Insects store water needed by other animals.
B.
Insects create energy needed by other animals.
C.
Insects help keep plant growth under control by eating leaves.
D.
Insects are a source of food for many organisms living in this
ecosystem.
73.
What would most likely happen if plant life was removed from a pond
ecosystem?
A.
The level of the water in the pond would increase. B.
The number of fish would decrease due to reduced oxygen.
C.
The amount of sunlight reaching the bottom would decrease. D.
The number of fish would increase due to an increase in oxygen. Ecosystem Review
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74. Eduardo saw some cats living in an alley. Which of these does a cat need to survive?
A.
grass to sleep in
B.
large trees to climb
C.
predators to chase it
D.
small animals to eat
75.
A rabbit eats a variety of plants in an ecosystem. Which best describes
the effect a drought would have on both rabbits and plants in an
ecosystem?
A.
Both populations would increase.
B.
Both populations would decrease. C.
Plant life would decrease and the rabbit population would increase.
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