WorksheetsEcology/Biodiversity Test Review
Total questions: 85
Worksheet time: 1hrs 1mins
Name
Class
Date
1.
An organism that produces its own food supply from inorganic compounds is called a(an)
a)
heterotroph
b)
consumer
c)
detritivore
d)
autotroph
2.
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
3.
Autotrophs make up the _______ level in all ecosystems.
a)
First
b)
Second
c)
Third
d)
Fourth
4.
symbiotic relationship in which both organisms benefit
a)
competition
b)
Mutualism
c)
nitrogen fixation
d)
energy pyramid
5.
A living relationship between two species in which one organism is harmed is called...
a)
mutualism
b)
commensalism
c)
parasitism
d)
niche
6.
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.
7.
The image provided is an example of a(n):
a)
Carnivore
b)
Herbivore
c)
Producer
d)
Autotroph
8.
The image provided is an example of a(n):
a)
Producer
b)
Autotroph
c)
Consumer
d)
Insect
9.
The amount of energy that usually transfers from one trophic level to the next...
a)
10%
b)
20%
c)
80%
d)
50%
10.
The nonliving aspects of an ecosystem.
a)
Abiotic factors
b)
Biotic factors
11.
The living portions of the ecosystem.
a)
Biotic factors
b)
Abiotic factors
12.
Water temperature would be an example of ...
a)
A biotic factor
b)
An abiotic factor
13.
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
14.
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
15.
Organisms that feed on both living producers and other consumers.
a)
Carnivores
b)
Omnivores
c)
Herbivores
d)
Detritivores
16.
The general name for organisms like animals and fungi that get their energy from eating other organisms.
a)
Producers
b)
Consumers
c)
Detritivores
d)
Carnivores
17.
The rabbit in this food web would be considered a:
a)
Decomposer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
18.
As you move upward, from level to level, in an energy pyramid, energy _____.
a)
increases
b)
decreases
c)
stays the same
d)
increases exponentially
19.
What are the Abiotic factors in this image?
a)
water, sunlight, dirt, air
b)
birds and plants
c)
birds, water, dirt
d)
plants, water
20.
Organisms that look similar and can produce fertile offspring
a)
Species
b)
Fish
c)
Community
d)
Trees
21.
The area between the highest mountain and the deepest ocean where life can be found
a)
Biosphere
b)
Biome
c)
Farm
d)
Ecosystem
22.
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
23.
Sometimes a population cannot grow to its biotic potential due to environmental factors. What are these environmental factors called?
a)
limiting factors
b)
biomes
c)
ecological pyramids
d)
carrying capasity
24.
Which of the following is an example of mutualism?
a)
tick and dog
b)
Nemo and sea anemome
c)
flatworms and horseshoe crab
d)
mistletoe and tree
25.
What is the symbiotic relationship called which one organism is helped and the other organism is unharmed?
a)
mutualism
b)
parasitism
c)
commensalism
d)
consumer
26.
Which of the following organisms are typical decomposers?
a)
grasses and ferns
b)
bacteria and mushrooms
c)
mice and deer
d)
lions and snakes
27.
An organism's specific role in its habitat is called its
a)
consumer
b)
niche
c)
birth right
d)
mutalism
28.
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
29.
Similar ecosystems on earth together.
a)
Ecosystem
b)
Biome
c)
Biosphere
d)
Population
30.
The maximum number of organisms that can survive in a particular ecosystem.
a)
carrying capacity
b)
birth rate
c)
limiting factor
d)
death rate
31.
If the temperature and amount of rainfall changes in an area from what is normal, this can also change the population.
a)
True
b)
False
32.
Changes in the amount of available resources in an ecosystem is not a limiting factor.
a)
True
b)
False
33.
If a disease destroying barley plants in a field swept through an ecosystem, what would happen to the barley eating bird population in the the field ?
a)
The bird population would stay the same
b)
The bird population would infinitely increase
c)
The bird population would decrease
34.
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
35.
What is the carrying capacity of the graph?
a)
around 500
b)
more than 500
c)
less than 500
d)
around 600
36.
What are the biotic factors in this image?
a)
sunlight, elephants, and grasses
b)
sunlight, water, and air
c)
elephants, plants, trees
37.
What is an heterotroph?
a)
An organism that can produce its own form of energy (via the Sun)
b)
An organism that consumes only plants for energy
c)
Various organisms that consume other organisms for energy
d)
An organism that decomposes other organisms
38.
What is the major difference between a community and an ecosystem?
a)
A community involves only the biotic, not the abiotic
b)
An ecosystem only includes herbivores and carnivores-- no decomposers
c)
An ecosystem involves only the biotic, AND THE abiotic
d)
An ecosystem is just a larger community
39.
What are the correct types of Trophic levels?
a)
Producers
Primary
Secondary
Primary
Secondary
b)
Primary
Secondary
Secondary
c)
Producers
Consumers
Decomposers
Consumers
Decomposers
d)
Producers
Primary
Secondary
Tertiary
Primary
Secondary
Tertiary
40.
What are the major differences between a species and a population?
a)
Populations consist of ALL of the individual organisms within a species in a given area/ecosystem that are fertile
b)
Populations are a collection of many different types of species that are not related to each other
c)
Populations are just a larger amount of individuals
d)
Populations are the number of individuals within a species that are identical
41.
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
42.
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.
43.
The general name for organisms like animals and fungi that get their energy from eating other organisms.
a)
Producers
b)
Consumers
c)
Detritivores
d)
Carnivores
44.
In this food web, what is the grasshopper?
a)
producer
b)
tertiary consumer
c)
secondary consumer
d)
primary consumer
45.
In the energy pyramid here, which organisms have the most energy available?
a)
Producers
b)
Carnivores
c)
Herbivores
d)
Top Predator
46.
An animal that is hunted and eaten for food is a
a)
predator
b)
prey
47.
A food chain is illustrated below:
The arrows represented most likely indicate
The arrows represented most likely indicate
a)
A. Energy released from metabolism into the environment as heat.
b)
B. Oxygen released from metabolism produced by cellular respiration.
c)
C. The absorption of energy from the environment that has been created.
d)
D. The transport of glucose away from the organism through photosynthesis.
48.
Occurs when organisms MOVE in from another environment.
a)
Immigration
b)
Emmigration
49.
Occurs when part of the population LEAVES the environment
a)
Immigration
b)
Emmigration
50.
A ______ plant species is one that occurs in area without human action.
a)
Invasive
b)
Native
c)
Weed
d)
Non-Native
51.
A non-native plant that causes problems to the environment that it is introduced to is called __________.
a)
Invasive
b)
Weed
c)
Indigenous
d)
Purple
52.
What is the main cause for species invading?
a)
Air Pollution
b)
Wanting to be adventerous
c)
Human Means
d)
Themselves
53.
What will likely happen to a SMALL population of wolves if there are LOTS of excess resources?
a)
Population will decrease
b)
Population will increase
c)
Population will go extinct
d)
Population will stay the same
54.
Which of the following is an EXAMPLE of a limiting factor?
a)
Water
b)
the color of the sky
c)
Migration
d)
Thick fur
55.
Which of the following is an example of competition?
a)
Two vultures fight over a dead rabbit
b)
A bear eats a fish
c)
Birds migrate south
d)
Pet dog keeps a man company
56.
What is the carrying capacity of the following graph?
a)
1000
b)
8000
c)
800
d)
600
57.
If the amount of food or resources available increases, the carrying capacity for an animal:
a)
Stays the same
b)
Increases
c)
Decreases
d)
Fluctuates
58.
If the carrying capacity of a predator decreases, what will happen to the carrying capacity of the prey?
a)
Will Increase
b)
Will Decrease
c)
Will stay the same
d)
Will fluctuate
59.
Which of the following would INCREASE the carrying capacity of an ecosystem?
a)
increase in predators
b)
disease
c)
increase in available food
d)
drought
60.
What type of growth is represented in this graph?
a)
exponential
b)
logistics
c)
a good kind
d)
representative
61.
Natural disasters can be considered limiting factors.
a)
true: density independent limiting factors
b)
false; natural disasters are not limiting factors
c)
true: density dependent limiting factors
d)
false: because Mrs. Howard said
62.
Limiting factors which impact the size of a population no matter how large that population is.
a)
Density Independent Limiting Factors
b)
Density Dependent Limiting Factors
c)
Carrying Capacity
d)
Exponential Growth
63.
An environmental factor such as storms and extreme heat or cold that decrease a population are considered to be.
a)
density- dependent factor
b)
population density
c)
dispersion
d)
density- independent factor
64.
What is a keystone species?
a)
A species that helps to hold an ecosystem together
b)
A species that lives in or around rocks
c)
Keys and stones have nothing to do with ecology
d)
A keystone isn't a living thing, it's just a stone
65.
The term biodiversity means:
a)
a wide variety of plants and animals in an ecosystem
b)
only a few types of plants and animals in an ecosystem
c)
an ecosystem composed mostly of plants
d)
an ecosystem composed mostly of animals
66.
An increase of biodiversity is normally a result of introducing an invasive species into an ecosystem.
a)
True
b)
False
67.
What does the graph tell you about biodiversity between 1600 and 1959?
a)
biodiversity has increased
b)
biodiversity has decreased
c)
biodiversity has remained about the same
d)
not enough information to tell
68.
Why do the populations of invasive species grow so quickly?
a)
invasive species require more energy than other organisms
b)
invasive species are prey to many animals.
c)
invasive species have no natural predators.
d)
invasive species keep the ecosystems in equilibrium.
69.
How do invasive plants damage the environment?
a)
by competing with native species
b)
by changing plant communities
c)
by decreasing diversity
d)
all of these damage an ecosystem
70.
Invasive species have a negative impact on...
a)
the ecosystem
b)
the economy
c)
Both the ecosystem and the economy
d)
None of these
71.
Based on the graph shown, what is the effect of removing a keystone species from an ecosystem?
a)
biodiversity goes up
b)
biodiversity goes down
c)
biodiversity stays about the same
d)
not enough information to tell
72.
Identify the process shown in this diagram.
a)
Extinction
b)
Toxin Accumulation
c)
Pollution
d)
Biomagnification
73.
What do the small dots in the picture represent?
a)
DDT
b)
Food
c)
Energy
d)
Biomass
74.
The process when concentrations of a harmful substance increases in organisms at higher trophic levels in a food chain or food web.
a)
Biomagnification
b)
Predation
c)
Extinction
d)
Accumulation
75.
Which organism in the food web would
contain the highest concentration of chemical pollutants?
a)
producers
b)
primary consumers
c)
secondary consumers
d)
tertiary consumers
76.
Algae grow rapidly when certain nutrients are added to the water supply causing an algal bloom. Eutrophication describes the process of adding nutrients to the water supply. What human activity is most responsible for the eutrophication that leads to algal blooms?
a)
Burning fossil fuels
b)
Disposing of pesticides
c)
Fertilizer for food crops
77.
What human activity affects the environment in such a way that algae blooms increase?
a)
agriculture
b)
fertilizer run off increases nutrients in ground water
c)
people contaminating fresh water sources
d)
all of the above
78.
In recent years, the human population has
a)
increased exponentially
b)
decreased exponentially
c)
decreased slowly
d)
increased slowy
79.
The human population is now about
a)
300 million
b)
1.3 billion
c)
7 billion
d)
12 billion
80.
If the number of births in a population is the same as the number of deaths in a population, what will happen to the growth of the population?
a)
it will increase
b)
it will decrease
c)
it will stay the same
d)
it doesn't matter
81.
If the number of births is greater than the number of deaths in a population, what will happen to the growth of the population?
a)
it will increase
b)
Ii will decrease
c)
it will stay the same
d)
it doesn't matter
82.
What is the best explanation for the rise in atmospheric CO2 levels since the 1800's?
a)
natural fluctuations of the climate
b)
eruptions of large volcanoes
c)
increased use of fossil fuels by humans
d)
photosynthesis by algae
83.
Check all that we would expect to see if the Earth's temperature was gradually increasing over time.
a)
Sea level would rise
b)
Ice caps would shrink
c)
Glaciers would shrink or disappear
d)
More extremes in weather patterns
84.
What effect would a rise in CO2 most likely have on the planet?
a)
more ozone in the atmosphere
b)
a cooler climate
c)
a warmer climate
d)
lower relative humidity
85.
What is the (estimated) Human Population's Carrying Capacity?
a)
23 bilion
b)
2 trillion
c)
8 billion
d)
10 billion
100 %
