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Ecology-1 Q (no C,N,H2O cycles, succession)[borrowed some prem Q

Total questions: 159

Worksheet time: 4hrs 49mins

Name
Class
Date
1.
All members of the same species within an ecosystem
a)
Population
b)
Community
c)
Biome
d)
Ecosystem
2.
All of the species within an ecosystem
a)
Population
b)
Community
c)
Biome
d)
Ecosystem
3.
All of the biotic and abiotic features of a single area
a)
Population
b)
Community
c)
Biome
d)
Ecosystem
4.
A collection of similar ecosystems
a)
Population
b)
Community
c)
Biome
d)
Ecosystem
5.
As the population of prey decreases, the population of the predator which eats it will...
a)
Increase
b)
Decrease
c)
Remain Constant
6.
The maximum size that a population can become based on the environmental conditions within the ecosystem
a)
Carrying Capacity
b)
Limiting Factors
c)
Succession
7.
A relationship in which one species benefits and the other is not impacted
a)
Mutualism
b)
Commensalism
c)
Parasitism 
d)
Predation
8.
A relationship in which one species benefits and the other is harmed
a)
Mutualism
b)
Commensalism
c)
Parasitism 
d)
Predation
9.
A relationship in which both species are helped
a)
Mutualism
b)
Commensalism
c)
Parasitism 
d)
Predation
10.
What are plants called in a food chain?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Scavengers
11.
Which of these is true about this food web?
a)
The Owl gets its energy from the producer.
b)
The Lion gets its energy only from a wild cat.
c)
The Kite gets its energy from the goat.
d)
The Mouse is most likely to die, several ways.
12.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
13.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
14.
An organism that gets energy from breaking down dead organisms, non-living material or waste
a)
producer
b)
consumer
c)
decomposer
d)
autotroph
15.
Another name for a consumer is a
a)
heterotroph
b)
autotroph
c)
producer
d)
plant
16.
Another name for a producer is an
a)
heterotroph
b)
autotroph
c)
herbivore
d)
carnivore
17.
Which organism recieves the least amount of energy from the producer?
a)
Owl
b)
Grasshopper
c)
Lilypad
d)
Mouse
18.
Which organism receives the least amount of energy from the producer?
a)
The squirrel
b)
The shrew
c)
The deer
d)
The rabbit
19.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a ecosystem.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms. 
d)
How carnivores get their food. 
20.
In the food web shown, which is the tertiary consumer?
a)
large lizard
b)
snake
c)
scorpion
d)
desert fox
21.
In a food chain, the first link (where the energy begins) is always:
a)
a primary consumer
b)
a decomposer
c)
a producer
d)
an omnivore
22.
What are all biotic and abiotic things that interact in an area?
a)
Ecosystem
b)
Environment
c)
Plants
d)
Population
23.
All the living things in an environment
a)
Biotic factors
b)
Traits
c)
Animals
d)
Natural Selection
24.
All the nonliving things in an environment
a)
Ecosystem
b)
Dead Animals
c)
Genes
d)
Abiotic factors
25.

The largest number of individuals that an area can support.

a)

carrying limit

b)

carrying capacity

c)

limiting factor

d)

density ratio

26.

What does the yellow line represent?

a)

exponential growth

b)

logistic growth

c)

carrying capacity

d)

none of the above

27.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a habitat.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms. 
d)
How carnivores get their food. 
28.
A living relationship between two species in which one organism is harmed is called...
a)
mutualism
b)
commensalism
c)
parasitism
d)
niche
29.
symbiotic relationship in which both organisms benefit
a)
competition
b)
Mutualism
c)
nitrogen fixation
d)
energy pyramid
30.
which symbiosis is this 
a)
parasitism 
b)
mutualism
c)
commensalism
d)
nonalism 
31.
Autotrophs make up the _______ level in all ecosystems.
a)
First
b)
Second
c)
Third
d)
Fourth
32.
What is the term for each step in the transfer of energy and matter within a biological community?
a)
energy path
b)
food web
c)
trophic level
d)
food pyramid
33.
What is the original source of almost all energy in most ecosystems?
a)
carbohydrates
b)
sunlight
c)
water
d)
carbon
34.
An organism that produces its own food supply from inorganic compounds is called a(an)
a)
heterotroph
b)
consumer
c)
detritivore
d)
autotroph
35.
In the image provided the bear is an example of a(n):
a)
Producer
b)
Autotroph
c)
Consumer
d)
Insect
36.
In the image provided the lion is an example of a(n):
a)
Carnivore
b)
Herbivore
c)
Producer
d)
Autotroph
37.
The living portions of the ecosystem.
a)
Biotic factors
b)
Abiotic factors
38.
Water would be an example of ...
a)
A biotic factor
b)
An abiotic factor
39.
A collection of organisms that belong to different populations but all live in the same area and interact with one another.
a)
Population
b)
Ecosystem
c)
Community
d)
Ecosphere
40.
A collection of organisms that make up a community as well as all of the nonliving aspects of the environment.
a)
Population
b)
Community
c)
Habitat
d)
Ecosystem
41.
Organisms that can capture energy from inorganic, nonliving sources, like the sun.
a)
Producers
b)
Consumers
c)
Detritivores
d)
Carnivores
42.
Levels of ecological organization in order from largest to smallest would be _____.
a)
species, population, community, ecosystem, biome, biosphere
b)
biosphere, biome, ecosystem, community, population, species
c)
biosphere, biome, ecosystem, population, community, species
d)
population, species, community, biome, biosphere,
43.
The picture below shows a ____.
a)
population
b)
community
c)
ecosystem
d)
biome
44.
The colors in the map below would most likely be used to identify ___.
a)
the biomes around the world
b)
the communities around the world
c)
the species around the world
d)
the populations around the world
45.
What type of symbiotic relationship exists between this sea turtle and the barnacles attached to his shell? (the turtle doesn't care)
a)
competition
b)
commensalism
c)
parasitism
d)
mutualism
46.
The place where an organism lives and that provides the things the organism needs is called its ___.
a)
niche
b)
habitat
c)
community
d)
biome
47.
An organism's specific role within an ecosystem is called its ___.
a)
ecosystem
b)
emigration
c)
niche
d)
carrying capacity
48.
When a jellyfish paralyzes a tiny fish with its poisonous tentacles, the jellyfish is the ___.
a)
predator
b)
prey
c)
host
d)
parasite
49.
These penguins can reproduce with one another. This means they are part of the same ____.
a)
community
b)
ecosystem
c)
species
d)
biome
50.
Organisms that breaks down and absorbs nutrients from dead organisms 
a)
consumer
b)
trophic level
c)
decomposer
d)
species
51.
Non-living factor that affects an ecosystem
a)
biotic factor
b)
abiotic factor
c)
food chain 
d)
biome
52.
Which organism would be at the top of the energy pyramid?
a)
shark
b)
algae
c)
fish
d)
shrimp
53.
Which organism would be at the bottom of the energy pyramid?
a)
bugs
b)
grass
c)
rabbit
d)
wolf
54.
An organism that produces its own food supply from inorganic compounds is called a(an)
a)
heterotroph
b)
consumer
c)
detritivore
d)
autotroph
55.
Which of the following would be the definition of a detritivore?
a)
Animals that eat insects.
b)
Organisms that feed on rocks, recycling the nutrients back into the ground.
c)
Organisms that eat only pants
d)
Things that feed on dead organisms, recycling the nutrients back into the ground.
56.
Organisms that feed on both living producers and other consumers.
a)
Carnivores
b)
Omnivores
c)
Herbivores
d)
Detritivores
57.
The rabbit in this food web would be considered a:
a)
Decomposer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
58.
In this Food Web Pyramid Which type of consumer gets only 10% of the energy stored in plants?
a)
Herbivore
b)
Carnivore
c)
Omnivore
d)
Secondary Consumer
59.
In this food web, what is the grasshopper?
a)
producer
b)
tertiary consumer
c)
secondary consumer
d)
primary consumer
60.
An organism's niche is 
a)
the entire role an organism has in the place it lives
b)
the range of temperatures that the organism needs to survive
c)
all the physical and biological factors in the organism's environment
d)
the nutrients that flow from the organism to the environment
61.
A pond ecosystem is shown in the diagram below. Which statement describes an interaction that helps maintain the dynamic equilibrium of this ecosystem?
Which statement describes an interaction that helps maintain the dynamic equilibrium of this ecosystem?
a)
The frogs make energy available to this ecosystem through the process of photosynthesis.
b)
The algae directly provide food for both the rotifers and the catfish.
c)
The green-backed heron provides energy for the mosquito larvae.
d)
The catfish population helps control the populations of water boatman and waterfleas.
62.
What are the Abiotic factors in this image? 
a)
water, sunlight, dirt, air
b)
birds and plants
c)
birds, water, dirt
d)
plants, water
63.

If the alfafa in the energy pyramid above contains 1,000 kilo-calories, what amount of energy would the red-tailed hawk obtain?

a)

1 kilo-calorie

b)

10 kilo-calorie

c)

100 kilo-calorie

d)

1000 kilo-calorie

64.

A bee receives nectar from a flower and carries the pollen to other flowers:

a)

predation

b)

parasitism

c)

mutualism

d)

commensalism

65.

Mistletoe grows and spreads on trees, taking their nutrients:

a)

predation

b)

parasitism

c)

mutualism

d)

commensalism

66.

What would be a good example of a primary consumer?

a)

carnivore

b)

detrivore

c)

decomposer

d)

herbivore

67.

The monkey would be a

a)

decomposer

b)

producer

c)

primary consumer

d)

secondary consumer

68.

Mice might grow in population and destroy the community by eating all of the berry bushes if

a)

wolves and snakes were removed from the food web

b)

another predator migrated in to the community

c)

the snake population grew

d)

none of these

69.

In the diagram, which organism provides nutrients for the

largest number of other organisms?

a)

Seal

b)

Herring

c)

Snapper

d)

Bluefish

70.

What is the driving source of energy for the food web to

the right?

a)

Sun

b)

Orca

c)

Seal

d)

Larvae

71.

Which organisms compete for food in the food web to the

right?

a)

Orca and Herring

b)

Seal and Copepod

c)

Killifish and Snapper

d)

Mackerel and Bluefish

72.

Which of these organisms would receive energy from the snake?

a)

Plant

b)

Rabbit

c)

Mouse

d)

Hawk

73.

Which type of consumer could be a first or second consumer?

a)

Herbivore

b)

Omnivore

c)

Carnivore

d)

Producer

74.

Organism that has an unusually large effect on its ecosystem.

a)

top predator

b)

tertiary consumer

c)

producer

d)

keystone species

75.
A measure of the number of different species in an ecosystem
a)
biodiversity
b)
species eveness
c)
species eveness
d)
ecosystem diversity
76.

The amount of energy that usually transfers from one trophic level to the next...

a)

10%

b)

20%

c)

80%

d)

50%

77.
What makes Fungi so unique when it comes to trophic levels?  
a)
They are producers so they can be high or low 
b)
They are consumers of only plants
c)
They are consumers of all types of organisms because they decompose 
d)
They are consumers of only the primary trophic level
78.

A local company dumped sewage into the wetlands. As a result, most fish in the wetlands died. This decrease in the number of fish will probably result in

a)

fewer mice

b)

fewer birds

c)

fewer spiders

d)

fewer insects

79.
How would the removal of the earth worms affect the other organisms.
a)
The number of bass will increase
b)
The number of crayfish will decrease
c)
The crayfish will get their energy directly from the sun 
d)
The number of bass and ospreys will increase
80.
The sun's energy is most directly available to people through
a)
Path A
b)
Path B
c)
Path C
d)
Path D
81.
Which organism receives the least amount of energy from the producer?
a)
The squirrel
b)
The shrew
c)
The deer
d)
The rabbit
82.
In the food web shown, which is the tertiary consumer?
a)
large lizard
b)
snake
c)
scorpion
d)
desert fox
83.

90% of the energy that gets lost as you move up a food pyramid or chain gets lost as

a)

pollution to the environment

b)

heat to the environment

c)

energy for decomposers

d)

gets recycled

84.
What may happen if the snowshoe hare was removed from the food web pictured?
a)
The insects in the habitat would increase.
b)
The shrew population would decrease due to being only hawk food source.
c)
The willow tree population would decrease.
d)
Foxes would dies due to no food source. 
85.
What is the carrying capacity of the following graph?
a)
1000
b)
8000
c)
800
d)
600
86.
Soil is an example of...
a)
Biotic Factor
b)
Abiotic Factor
c)
Ecosystem
d)
Niche
87.
Water is an example of...
a)
Biotic Factor
b)
Abiotic Factor
c)
Biome
d)
Habitat
88.
A flower is an example of...
a)
Biotic Factor
b)
Abiotic Factor
c)
Population
d)
Ecosystem
89.
The most important abiotic factors when studying biomes are...
a)
Food and Water
b)
Water and Sunlight
c)
Temperature and Oxygen
d)
Rainfall and Temperature 
90.
Which species most likely has the largest population?
a)
Herring
b)
Plankton
c)
Shrimp
d)
Shark
91.
Which example has a bear as a third- level consumer?
a)
A bear ate a human, that ate a fox, that consumed a field mouse, which ate a shrub.
b)
A bear ate a fox, that consumed a field mouse, which ate a shrub
c)
A fox consumed a field mouse, which ate a shrub
d)
A filed mouse ate a shrub.
92.
Select all of the  correct answers.  Identify the second-level consumers in the food web.
a)
Crab, Salmon,  Small Fish
b)
Crab, Shrimp, Small fish
c)
Heron, Small fish, Worm
d)
Salmon, Crab, Heron
93.
Identify each correct food chain that demonstrates the energy flow of this food web.
a)
Plant>Snail>Bluebird>Eagle
b)
Plant<Snail<Bluebird<Eagle
c)
Plant>Snail<Bluebird>Eagle
d)
Plant<Rabbit<Eagle
94.
Which of the following describes a species?
a)
all ecosystems in the same climate
b)
all organisms in the same area
c)
organisms that can be found in biome
d)
organisms that can breed with one another
95.
All of the loblolly pine trees in South Carolina is an example of
a)
a biome
b)
a community
c)
an ecosystem
d)
a population
96.
Live organisms such as  the crabs, gulls, and sea grass at the coast are part of the same 
a)
community
b)
niche
c)
population
d)
species
97.
Communities in an area and the abiotic factors, including water, sunlight, oxygen, and soil.
a)
Biome
b)
Ecosystem
c)
Population
d)
Species
98.
Individual ecosystems grouped together according to the climate.
a)
Biome
b)
Community
c)
Habitat
d)
Population
99.
As shown in this food web, which of these first level and second level consumer?
a)
The deer
b)
The grizzly bear
c)
The butterfly
d)
The marmot
100.
When a population grows past the ecosystem's carrying capacity, what happens to the population?
a)
Continues to grow
b)
The population starts to die off to return to carrying capcity
c)
The population will go extinct due to lack of resources
d)
The population grows then finds a new carrying capacity
101.
The field mouse population in Australia has grown so fast that they eat an average of  $4 billion of wheat every year. Their fast growth is caused by:
a)
A. The mice like to reproduce
b)
B. A lack of a native species to eat the field mouse
c)
C. Abundant food supply
d)
Both B and C
102.
What is the carrying capacity of the graph?
a)
around 500
b)
more than 500
c)
less than 500
d)
around 600
103.
In a forest ecosystem, which of the following is the best example of a limiting factor for a rabbit population?
a)
Squirrel Population
b)
Sunlight
c)
Grass available
104.

This graph shows ....

a)

When one population increases, the other decreases.

b)

When one population decreases, the other increases.

c)

When one population increases, the other increases instantly.

d)

When one population increases, it causes the other to increases shortly after.

105.

Food chains are hooked together into

a)

food webs

b)

complex chains

c)

star patterns

d)

food cycling

106.
a relationship between two in which one species, the predator, feeds on the other species, the prey
a)
chemosynthesis
b)
predation
c)
cellular respiration 
d)
commensalism
107.
Consumer that eats plants
a)
heterotroph
b)
herbivore
c)
producer
d)
community
108.
All the dear in a forest would be considered
a)
Community
b)
Population
c)
Habitat
d)
Ecosystem
109.
a struggle between organisms for limited resources and determines the size and location of populations
a)
Competition
b)
Cooperation
c)
Niche
d)
Adaptation
110.
In the picture who is the predator?
a)
Owl
b)
Mouse
c)
Evergreen Tree
d)
None of the above
111.
In 1980 the wolf population outnumbered the moose population. What can you assume was occurring between the wolves of this population?
a)
Cooperation for prey
b)
Competition for prey
c)
Interdependence for prey
d)
Symbiotic Relationship with prey
112.
Organisms that share the same niche
a)
Compete for food and space
b)
Populations decrease
c)
Have the same job or purpose
d)
All of the above
113.
a)
tundra
b)
tropical rainforest
c)
desert
d)
grassland
114.
a)
tundra
b)
tropical rainforest
c)
desert
d)
grassland
115.
a)
tundra
b)
tropical rainforest
c)
desert
d)
grassland
116.
a)
savanna
b)
temperate deciduous forest
c)
taiga/coniferous forest
117.
a)
savanna
b)
temperate deciduous forest
c)
taiga/coniferous forest
118.
a)
savanna
b)
temperate deciduous forest
c)
taiga/coniferous forest
119.
In which biome would you MOST LIKELY find this organism?
a)
savanna
b)
tropical rainforest
c)
temperate grassland
d)
tundra
120.
In which biome would you MOST LIKELY find this organism?
a)
tundra
b)
desert
c)
tropical rainforest
d)
temperate deciduous forest
121.
In which biome would you MOST LIKELY find this organism?
a)
temperate grassland
b)
desert
c)
tropical rainforest
d)
savanna
122.
In which biome would you MOST LIKELY find this organism?
a)
taiga/coniferous forest
b)
temperate deciduous forest
c)
tropical rainforest
d)
desert
123.
In which biome would you MOST LIKELY find these organisms?
a)
swamp
b)
lake
c)
pond
d)
ocean
124.
This is a biome that consists of trees that lose their leaves every year.
a)
tropical rainforest
b)
temperate deciduous forest
c)
coniferous forest
d)
tundra
125.
What are the biotic factors in this image?
a)
sunlight, elephants, and grasses
b)
sunlight, water,  and air
c)
elephants, plants, trees 
126.
Two plants are grown in the same cup. Both plants receive the same amount of nutrients, water, and light.
However, plant A has a significantly higher amount of growth than plant B. Why?
a)
Plant A outcompetes Plant B for resources
b)
Plant B outcompetes Plant A for resources
c)
the cup soaks up the water
d)
plant B does not need as much water as plant A
127.
As you travel South from the North pole to the equator, precipitation and temperature increase.
What happens to the plants?
a)
The poles (North and South) support large, abundant tree species
b)
The greatest abundance and diversity of plants will occur at the tropics
c)
the tropics will only support small forms of vegetation
d)
the greatest abundance and diversity will occur in temperate regions
128.

The picture shows an ocean bay food chain. Sea otters move into the ocean bay. They eat all the sea urchins. This change will cause the

a)

kelp to have less food

b)

crabs to have more food

c)

sea ducks to have less food

d)

arctic foxes to have more food

129.

Which model correctly shows energy flow in a food chain?

a)
b)
c)
d)
130.

A marine food web is shown. Which chart correctly shows three of the organisms according to their roles in cycling matter in the marine food web?

a)
b)
c)
d)
131.

This picture shows the energy flow through a meadow community. Which of the following would most likely occur to the populations within the community of organisms immediately after a wildfire burns the environment?

a)

Hawks would increase and foxes would increase.

b)

Hawks would decrease and foxes would increase.

c)

Meadow plants would increase and rabbits would decrease.

d)

Meadow plants would decrease and rabbits would decrease.

132.

Which statement best describes what will happen if the population of herbivores in the community decreases?

a)

The population of foxes will increase.

b)

The population of hawks will increase.

c)

The population of rabbits will increase.

d)

The population of meadow plants will increase.

133.

Which statement best describes the flow of energy as it passes through the organisms in the pyramid?

a)

Energy flows through the organisms from bottom to top and increases at each level.

b)

Energy flows through the organisms from bottom to top and decreases at each level.

c)

Energy flows through the organisms from top to bottom and increases at each level.

d)

Energy flows through the organisms from top to bottom and decreases at each level.

134.

The diagram shows a simple food web. Which of the following animals might compete with the coyote in this food chain?

a)
b)
c)
d)
135.

This diagram shows a marine food chain. The zooplankton in this food chain are

a)

primary producers

b)

primary consumers

c)

secondary consumers

d)

tertiary consumers

136.

The table above contains information about animal diets. Which energy pyramid best represents the data in the table?

a)
b)
c)
d)
137.

A forest ecosystem food web is shown. If additional wrens are introduced into this ecosystem, there will most likely be an immediate decrease in the

a)

frog population

b)

snake population

c)

falcon population

d)

grasshopper population

138.

In a pond, the primary producer is a green alga, Spirogyra; the primary consumer is the crustacean, Daphnia. The secondary consumer is a small fish, the bluegill; and the tertiary consumer is a larger fish, the smallmouth bass. What changes can be expected in the pond if the Daphnia are killed with pesticides?

a)

The Spirogyra population will probably die.

b)

The bluegill population will probably increase.

c)

The Daphnia population will eat something else.

d)

The smallmouth bass population will die.

139.

For the food chain shown, which of the following changes would have the most severe consequences?

a)

a drastic decrease in rainfall, causing drought

b)

the poaching of predatory hawks by game hunters

c)

the introduction of a second predator that eats field mice

d)

a parasitic infestation that reduces the cricket population

140.

The diagram shows part of an aquatic food web for a stable lake ecosystem in Connecticut. What is the source of energy for the algae?

a)

waves

b)

sunlight

c)

bacteria

d)

rotifers, water fleas, and tadpoles

141.

Suppose that a new predator of the rabbit migrated into this ecosystem. What is the most likely initial effect on the other organisms?

a)

more competition among the mice for food

b)

more competition among the hawks for food

c)

less competition among the snakes for food

d)

less grass available for food

142.

A chemical pesticide was applied to an area of this ecosystem by a landowner to control the mouse population. There was a decrease in the mouse population due to the presence of this pesticide. Which one of the following would most likely occur first due to this change in the ecosystem?

a)

the amount of grass would decrease

b)

the snake population would increase

c)

the rabbit food supply would increase

d)

the snake food supply would increase

143.

A student examines the information in the table. The student concludes that Organism W should be placed at the base of the food web. However, the student later learns that Organism W's cells do not contain chloroplasts. Which conclusion would be appropriate, based on the new information?

a)

Another organism in the marine ecosystem is a producer.

b)

Organism W is a secondary consumer in the marine ecosystem.

c)

The role of Organism T in the marine ecosystem changes during its life.

d)

This marine ecosystem does not have any producers.

144.

In this energy pyramid, which organism would most likely be in level 2?

a)

bird

b)

fox

c)

caterpillar

d)

tree

145.

Which group of organisms is not represented in the diagram above of a simple food web?

a)

decomposers

b)

consumers

c)

prey

d)

producers

146.

What do the arrows in the food chain indicate about the flow of energy in an ecosystem?

a)

Energy is continuously recycled by the organisms in an ecosystem.

b)

Energy flows in one direction in an ecosystem, from producers to consumers.

c)

More of the available energy in an ecosystem is given to large animals than to small animals.

d)

Organisms at the end of the food chain receive more energy than those at the beginning.

147.

The trophic pyramid is a triangular shape because

a)

90% of energy is lost to heat, movement, and survival, and only 10% of energy goes to the next level

b)

People see the top of the pyramid so it is important to know the keystone species.

c)

10% of energy is lost to heat, movement, and survival, and only 90% of energy goes to the next level

d)

the top of the pyramid is the pinnacle organism of an ecosystem

148.
Which consumers gets the most energy from the producers?
a)
Shark
b)
Herring
c)
Phytoplankton
d)
Crustaceans
149.
Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?
a)
There would be a decrease in the small bird population.
b)
There would be a decrease in the grass/flowers population.
c)
There would be a decrease in the mice population.
d)
There would be an increase in the grass/flowers population.
150.
Which of the following best describes the small bird in the food web above?
a)
primary and secondary consumer
b)
secondary and tertiary consumer
c)
primary consumer only
d)
secondary consumer only
151.
The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain organisms that can photosynthesize?
a)
A
b)
B
c)
C
d)
D
152.
What may happen if the snowshoe hare was removed from the food web pictured?
a)
The insects in the habitat would increase.
b)
The shrew population would decrease due to being only hawk food source.
c)
The willow tree population would decrease.
d)
Foxes would dies due to no food source. 
153.
Which organism do the owl and the weasel compete for in the food web?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
154.
The diagram is intended to show relationships in an ecosystem. What do the arrows represent?
a)
The direction of population migration
b)
Differences in dietary habits
c)
Progressively smaller organisms
d)
The direction of the energy flow
155.
The diagram represents different levels of a marine food pyramid. Between which two levels is the greatest amount of energy transferred
a)
R and Q
b)
S and R
c)
T and S
d)
U and T
156.
Which represents the largest group in a food web?
a)
carnivores
b)
omnivores
c)
herbivores
d)
producers
157.

The diagram shows a food web.

What would most likely happen to the food web if the amount of grass drastically decreased?

a)

Only the rabbit would be affected.

b)

The mouse and grasshopper would be affected.

c)

The grasshopper, mouse, and shrew would be affected.

d)

The entire food web would be affected.

158.

Click on the image to make it larger-- Choose all that apply: The hawk gets energy from...

a)

mouse

b)

rabbit

c)

wildflowers

d)

snake

159.

In this food web, which organism is an omnivore?

a)

Grass

b)

Squirrel

c)

Mouse

d)

Fox

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