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Ecology and Human Impact Practice TEST

Total questions: 40

Worksheet time: 1hrs 13mins

Name
Class
Date
1.

What is an invasive species?

a)

An organism that is new to an environment that has positive effects on the environment.

b)

An organism that is native to an environment that has negative effects on the environment.

c)

An organism that is new to an environment that has negative effects on the environment.

d)

An organism that is native to an environment that has positive effects on the environment.

2.
New fuels are being produced by converting corn and grasses into compounds containing alcohols that can be broken down for energy in various engines. The purpose of this research is to
a)
 reduce the use of nonrenewable resources.
b)
increase the rate of air pollution.
c)
reduce the rate of homeostasis in organisms.
d)
 cause a loss of biodiversity in the rain forests.
3.
The presence of wastes, such as plastic bags and motor oil, in lakes and streams miles away from developed areas suggests that
a)
. ecosystems are interconnected and human action can alter ecosystem equilibrium.
b)
recycling programs have failed to conserve biotic resources.
c)
natural processes can alter ecosystem stability.
d)
 direct harvesting practices have led to irreversible destruction of ecosystems.
4.
The northern elephant seal was almost hunted to extinction in the 1800s. By the late 1890s, approximately one hundred seals were left, reducing the gene pool of the population. What will be the consequence of this reduction?
a)
 Competition within the population will increase.
b)
The surviving elephant seals will be better able to adapt.
c)
 Inbreeding will be less frequent among the remaining population.
d)
The elephant seals will be more vulnerable to environmental change. 
5.
A strip mining company wants to lease some land that is currently part of a national park. They promise to reclaim the land should any minerals be mined from the area, and they are willing to pay top dollar for the rights. As an ecologist, what factors would you raise with the local government?
a)
the threat to local biodiversity
b)
management of the land after the company leaves
c)
the new jobs that would be created
d)
the increased traffic in the area
6.
A tapeworm and a cat have this type of relationship.
a)
mutualism
b)
parasitism
c)
commensalism
d)
competition
7.
A relationship between two organisms in which one organism benefits and the other is unharmed...
a)
Mutualism 
b)
Competition
c)
Parasitsm 
d)
Commensalism 
8.
What type of symbiosis?  Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower.
a)
commensalism
b)
mutualism
c)
parasitism
d)
predation
9.
These are interactions where organisms struggle to get the resources they need.
a)
grocery shopping
b)
hunger
c)
competition
10.
An organism's role in a community is its' _____
a)
 Niche 
b)
Competition 
c)
Mutualism
d)
Parasitism
11.

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

12.

This is the largest number of individuals of a population that the environment can support...

a)

carrying capacity

b)

population crash

c)

lag phase

d)

mutualism

13.

In a forest ecosystem, which of the following is the best example of a limiting factor for a rabbit population?

a)

The squirrel population

b)

The amount of sunlight

c)

Amount of grass available

d)

Rabbits have no limiting factors

14.

Water, sunlight, shelter, and space are resources that are often........

a)

abiotic limiting factors

b)

biotic limiting factors

c)

non-limiting factors

d)

exponetial factors

15.

According to the graph, what is causing the deer population to decrease

a)

They got sick

b)

The wolf population is decreasing

c)

The wolf population increased

d)

They ran out of food

16.

Predator population lags behind prey population because......

a)

Increase in predators leads to decrease in prey

b)

Increase in predators leads to increase in prey

c)

Increase in predators leads to decrease in producers

d)

Increase in producers leads to increase in prey

17.
Biotic means
a)
living
b)
nonliving
18.
What are the biotic factors in this image?
a)
sunlight, elephants, and grasses
b)
sunlight, water,  and air
c)
elephants, plants, trees 
19.
The study of relationships between biotic and abiotic factors interacting in the same area.
a)
Ecology
b)
Biology
c)
Zoology
d)
Botany
20.

Barnacles are animals that cannot move. In order to get food, they attach to whales and catch any floating plankton in the water. The whale is neither helped nor harmed in the interaction. What type of symbiosis is this?

a)

Mutualism

b)

Commensalism

c)

Parasitism

d)

Neutralism

21.
Bears eat a variety of foods including fish, berries, other types of vegetation.  Bears would best be classified as – 
a)
producers
b)
herbivores
c)
carnivores
d)
omnivores
22.
Snakes eat many types of small mammals including mice and rabbits as well as other lizards.  Snakes would best be classified as a - 
a)
producers
b)
herbivores
c)
carnivores
d)
omnivores
23.
Horses eat grasses and other plants in order to gain their nutrition.  Horses would best be classified as - 
a)
producers
b)
herbivores
c)
carnivores
d)
omnivores
24.
Which organism in this food chain is a producer?
a)
Fish
b)
Grass
c)
Grasshopper
d)
Hawk
25.
In this food pyramid, which level has the greatest amount of energy?
a)
Producers
b)
Primary Consumers
c)
Secondary Consumers
d)
Tertiary Consumers
26.
How much energy is passed from one trophic level to the next?
a)
1%
b)
10%
c)
50%
d)
100%
27.
What happens to the energy that is not passed on to the next level?
a)
80-90 percent is used by each member of the chain for life processes
b)
80-90 percent may be lost to heat or waste products
c)
80-90 percent may be eaten 
d)
A and B both
28.
A series of interrelated food chains in a given ecosystem is called a ______________.
a)
trophic level
b)
food pyramid
c)
predator-prey relationship
d)
food web
29.

A producer__________________________.

a)

must eat other organisms for food/energy ex: shark

b)

Makes their own food ex: trees

c)

get their energy from consuming dead things

30.

A consumer __________________________.

a)

must eat other organisms for food/energy ex: shark

b)

Makes their own food ex: trees

c)

get their energy from consuming dead things

31.

A detritivore/ decomposer __________________________.

a)

must eat other organisms for food/energy ex: shark

b)

Makes their own food ex: trees

c)

get their energy from consuming dead things

32.

What happens to the other 90% of energy when it is passed up the food chain?

a)

it is found in the dirt

b)

it is used for metabolic processes or given off to the environment as heat

c)

it us used for swimming

d)

it is used to make a Krabby Patty

33.

The end result of ecological succession is usually a(n)

a)

A.land biome.

b)

B.aquatic biome.

c)

C.unstable community.

d)

D.climax community.

34.

Which of the following is not a possible cause of ecological succession?

a)

A. fire

b)

B. flood

c)

C. earthquake

d)

D. change of season

35.

. Which of the following is an example of primary succession?

a)

A.lichens growing on rocks following a volcanic eruption

b)

B.grasses growing after a forest fire

c)

C.oak trees replacing pine trees in a forest

d)

D. non-native species introduced into a climax community

36.

Which of these organisms would you most expect to find on a small island that formed as a result of a volcanic two years prior?

a)

A.climbing vines

b)

B.hardwood tree

c)

C.monkey

d)

D.lichen

37.

How is primary succession different from secondary succession?

a)

Primary succession starts with soil.

b)

Secondary succession start with bare rock.

c)

Primary succession starts with bare rock, with lichens and moss.

d)

Fire is an example of primary succession.

38.

Which of the following best

describes biodiversity

a)

A. a diverse Biology class

b)

B. variety of all life on earth

c)

C. a variety of plants

d)

D. a variety of animals

39.
What type of succession is shown going from figure A to figure B?
a)
primary succession
b)
eutrophication
c)
secondary succession
d)
intermediate
40.
After a forest fire, an ecosystem would start regrowth through -
a)
primary succession
b)
secondary succession
c)
climax community
d)
limiting factors

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