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Ecology

Total questions: 53

Worksheet time: 30mins

Name
Class
Date
1.
All living things get their energy from which of the following sources?
a)
food
b)
water
c)
sun
2.
Which of the following is another word for a plant?
a)
autotroph
b)
heterotroph
c)
consumer
3.
Which of the following is an organism that eats only meat?
a)
herbivore
b)
carnivore
c)
omnivore
4.
Which of the following terms describes an area where an organism lives?
a)
community
b)
habitat
c)
area
5.
Which is represented by all of the bullfrogs living around a pond?
a)
community
b)
habitat
c)
population
6.
What would most likely happen if the rabbit population was removed from the food chain grass —› rabbit —› fox?
a)
their would be more grass
b)
there would be less rabbits
c)
there would be more fox
7.
Which is an example of a parasitic relationship?
a)
a bee pollinates a flower
b)
a tapeworm takes nutrients from a dog
c)
an orchid lives in a tree but does not harm the tree
8.
In which type of relationship do both species benefit?
a)
parasitism
b)
mutualism
c)
commensalism
9.
Barnacles grow on whales.  Whales give the barnacles a place to live but the barnacles do not help or harm the whale.  Which type of relationship is this?
a)
commensalism
b)
mutualism
c)
parasitiesm
10.
An oxpecker bird eats ticks off of a zebra.  The bird gets food from eating the ticks and the zebra has harmful parasites removed.  Which type of symbiosis is this?
a)
mutualism
b)
parasitism
c)
commensalism
11.
An organism that needs to eat other organisms to obtain energy is known as a:
a)
Autotroph
b)
Producer
c)
Consumer
d)
Mutualist
12.
Consumer that eats plants
a)
heterotroph
b)
herbivore
c)
producer
d)
community
13.
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. 
14.
relationship in which two species live closely together
a)
resource
b)
mutualism
c)
succession
d)
symbiosis
15.
The rabbit in this food web would be considered a:
a)
Decomposer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
16.
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
17.
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
18.
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
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.
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
21.
Evaporation of water from the leaves of a plant gives of purified water to be evaporated.
a)
precipitation
b)
concentration
c)
transpiration
d)
evaporation
22.
Individuals that can breed with one another make up a
a)
species
b)
population
c)
community
d)
ecosystem
23.

In the woods, there are ducks and mice. They both compete for grasshoppers as the only source of food in that area at that time. The ducks outcompete the mice, and the mice die out in that area. This is an example of:

a)

Neutralism

b)

Commensalism

c)

The competitive exclusion principle

d)

Mutualism

24.

The monkey would be a

a)

decomposer

b)

producer

c)

primary consumer

d)

secondary consumer

25.

Introduced species disrupt ecosystems because they are a/an

a)

Keystone Species

b)

Endemic Species

c)

Invasive Species

d)

Native Species

26.

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

27.

These organisms are often not shown in a food chain, but are important for recycling nutrients

a)

producers

b)

decomposers

c)

primary consumers

d)

carnivores

28.

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

29.
The area between the highest mountain and the deepest ocean where life can be found
a)
Biosphere
b)
Biome
c)
Farm
d)
Ecosystem
30.
At what stage does this population reach it's carrying capacity on the Demographic Transition Model
a)
1
b)
2
c)
3
d)
4
31.
Bacteria which convert nitrogen gas into bio-available forms of nitrogen, such as ammonia and nitrate, are known as _____
a)
De-nitrification bacteria 
b)
Nitrogen fixing bacteria
c)
Oxidizers
d)
Buffers
32.
Phosphorus is an essential nutrient for plants and animals because it is use to make _______
a)
Carbohydrates
b)
Glucose
c)
RNA / DNA
d)
Starches
33.

Which of the following statements account for the change in population seen between years 7 and 8?

a)

The birth rate of the pigeons increased.

b)

The emigration rate of the pigeons decreased.

c)

The death rate of the pigeons exceeded the birth rate.

d)

The neighborhood reached its carrying capacity for the pigeon population

34.

In addition to energy, organisms need matter to survive. Which of the following is true about matter in the biosphere?

a)

The total amount of matter decreases overtime

b)

The total amount of matter increases overtime

c)

Biogeochemical cycles transform and reuse molecules

d)

Matter flows through ecosystems in one direction

35.

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

36.

How would you describe the population size at the12th unit of time?

a)

The population is constant.

b)

The population is decreasing.

c)

The population is increasing.

d)

The population increases then decreases.

37.

Anything that restricts the size of a population is a ________________________.

a)

biotic potential

b)

carrying capacity

c)

species

d)

limiting factor

38.

What occurs when a population becomes larger than the carrying capacity of the ecosystem?

a)

overpopulation

b)

carrying capacity

c)

population density

d)

nothing, everything stays the same

39.

Which of the following is NOT an example of a Density Dependent Factor?

a)

Parasitism

b)

Natural Disasters

c)

Predation

d)

Competition

40.

The movement of individuals into an area is known as:

a)

Supplementation

b)

Emigration

c)

Immigration

d)

Eradication

41.

Emigration is:

a)

When a population continues to increase.

b)

When individuals move into an area.

c)

When individuals move out of an area.

d)

The study of human popuations.

42.

In a given area, if the population of predators increases, the population of prey will _____________.

a)

increase

b)

decrease

c)

remain about the same

d)

go extinct

43.

Which factor would contribute to an exponential growth rate in a given population?

a)

higher death rates

b)

less competition

c)

less resources

d)

lower birth rates

44.

All of the following are density-independent factors except:

a)

seasonal changes

b)

hurricanes

c)

less space

d)

deforestation

45.

Population density can be best described as:

a)

The amount of deaths that occur in a population

b)

The amount of births that occur in a population

c)

The amount of individuals in a given space.

d)

The amount of available nutrients in an ecosystem

46.

If a population grows larger than the carrying capacity:

a)

birthrate may rise

b)

birthrate must fall

c)

birth and death rates remain the same

d)

death rate must fall

47.

Ever since the Industrial Revolution, human population has generally:

a)

increased

b)

decreased

c)

remained the same

d)

ecology

48.

A density-independent factor happens:

a)

depending on the number of predators hunting prey

b)

depending on the size of the population

c)

if there are no resources left in a habitat

d)

regardless of the size of the population

49.

The range or area occupied by a population is its

a)

growth rate

b)

geographic distribution

c)

age structure

d)

population density

50.
Which of the following statements is correct?
a)
Population size of predators increases when their prey is scarce.
b)
Competition for resources is density-independent when food is plentiful.
c)
Disease is density-dependent because transmission occurs more easily when a population is large.
d)
A change in average temperature is a density-dependent factor because fewer organisms can acclimate to variations in temperature.
51.
How does the logistic model of population growth differ from the exponential model?
a)
The exponential model shows a restricted growth rate.
b)
The logistic model considers the environment’s carrying capacity.
c)
The graph of the exponential model is S shaped.
d)
The graph of the logistic model has a longer lag phase.
52.
A population’s ____________________ is the amount that a population’s size changes in a given period of time.
a)
Carrying Capacity
b)
Limiting Factor
c)
Growth Rate
d)
Biome
53.
A population’s emigration in one month totaled three individuals. During the same period, immigration was 17 individuals. Natality was 12, and mortality was 26 due to a parasite infection. What was the net effect on the population size?
a)
–14
b)
0
c)
+12
d)
+26

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