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Ecology

Total questions: 35

Worksheet time: 14mins

Name
Class
Date
1.
All of the following are examples of limiting factors for a population except...
a)
space
b)
food
c)
time
d)
weather
2.
In which type of interaction do both species benefit?
a)
predation
b)
mutualism
c)
commensalism
d)
parasitism
3.
Which of these relationships is an example of parasitism?
a)
a bird building a nest on a tree branch
b)
a bat pollinating a saguaro cactus
c)
a flea living on a cat's blood
d)
ants protecting a tree that produces the ants' only food
4.
In general, which of the following is a true statement about population size?
a)
If birth rate < death rate, population size increases
b)
If death rate < birth rate, population size decreases
c)
If birth rate > death rate, population size increases
d)
If death rate > birth rate, population size increases
5.
A freshwater lake has a muddy bottom, which is home to different types of algae and other organisms. Many species of fish feed on the algae. Which of the following is an ABIOTIC factor in this ecosystem?
a)
the temperature of the water
b)
the color of the algae
c)
the number of species of fish
d)
the amount of food available to the fish
6.
Which of the following lists the levels of organization in an ecosystem from the smallest unit to the largest?
a)
population, organism, community, ecosystem
b)
organism, population, ecosystem, community
c)
organism, community, population, ecosystem
d)
organism, population, community, ecosystem
7.
All the living and nonliving things that interact in a particular area make up a(n)
a)
ecosystem
b)
population
c)
community
d)
biome
8.
All the different populations that live together in an area make up a(n)
a)
ecosystem
b)
community
c)
habitat
d)
organism
9.
The way a species makes its living is ...
a)
natural selection
b)
adaptation
c)
niche
10.
How do you think an increase in the fox population affected the hare population?
a)
The hares decreased beacause there were fewer food sources
b)
The hares increased because there were more food sources
c)
The hares decreased because there were more fox to prey on them
d)
The hares increased because they had more space 
11.
In which of the following areas would primary succession most likely occur?
a)
A new island formed by the eruption of an undersea volcano
b)
A clearing in a forest left by cutting down the trees
c)
An abandon junkyard
12.
A symbiotic relationship in which one species benefits and the other is harmed
a)
mutualism
b)
predation
c)
commensalism
d)
parasitism
13.
Which species are often pioneer species?
a)
cattails and algae
b)
pinetrees and oaks
c)
sagebrush and tumbleweed
d)
lichen and moss
14.
A symbiotic relationship in which one organism benefits and the other species is neither harmed or helped
a)
mutualism
b)
predation
c)
commensalism
d)
parasitism
15.
An interaction in which one organism kills and eats another organism
a)
competition
b)
mutualism
c)
commensalism
d)
predation
16.
Environmental conditions that prevent populations from increasing
a)
abiotic factors
b)
carrying capacity
c)
limiting factors
d)
biotic factors
17.
The largest population that an environment can support
a)
carrying capacity
b)
ecosystem
c)
adaptation
d)
limiting factors
18.
A(n) ______ is a group of organisms that are physically similar and can mate with each other to produce offspring that can also mate and reproduce.
a)
organism
b)
species
c)
population
d)
community
19.
A term that means to leave a population is 
a)
emigration
b)
immigration
c)
sampling
d)
population density
20.
A prairie dog, a hawk, and a badger all are members of the same ________________.
a)
niche
b)
community
c)
species
d)
population
21.

What kind of prey adaptation is shown here?

a)

protective covering

b)

camouflage

c)

mimicry

d)

warning coloring

22.

What kind of prey adaptation is shown in the image?

a)

warning coloring

b)

camouflage

c)

speed

d)

protective covering

23.

What is the population density of 20 butterflies in a garden that is 10 square meters?

a)

2 butterflies per square meter

b)

200 butterflies per square meter

c)

10 butterflies per square meter

d)

30 butterflies per square meter

24.

What is an environmental factor that causes a population to stop growing or decrease?

a)

limiting factor

b)

death rate

c)

bad luck

d)

climate

25.

What type of succession occurs after an island is formed from a volcanic eruption?

a)

Primary

b)

Secondary

26.

What abiotic factor would be immediately affected after a volcanic eruption?

a)

Water

b)

Sunlight

c)

Soil

d)

Rocks

27.

If there are 6,000 kCal on the producer level, how many kCal are on the next level up?

a)

60 kCal

b)

600 kCal

c)

65 kCal

d)

5,000 kCal

28.

What label would be appropriate for the bottom level of the pyramid?

a)

Herbivores

b)

Producers

c)

Carnivores

d)

Omnivores

29.

At what point on an energy pyramid would you find the MOST energy?

a)

Top

b)

Middle

c)

Bottom

d)

It is all equal.

30.

Look at the image. What kind of symbiosis is represented?

a)

Parasitism

b)

Commensalism

c)

Mutualism

d)

Communism

31.

What term would describe what happened to the population from days 23-35?

a)

The population decreased.

b)

The population increased.

c)

The population reached carrying capacity.

d)

The population is extinct.

32.

What type of adaptation would describe this poison dart frog best?

a)

warning coloring

b)

camouflage

c)

protective covering

d)

speed

33.

This octopus is about to blend in with its surroundings. What kind of adaptation is this?

a)

speed

b)

camouflage

c)

protective covering

d)

alarm calls

34.

All of the following could limit the growth of a population except which factor?

a)

harsh winter

b)

increased predator population

c)

lack of rain

d)

plentiful food sources

35.

A graph displaying the population of an organism and its predator's population over time looks like which of the following?

a)
b)
c)
d)

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