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Ecology: 14.1-14.4

Total questions: 28

Worksheet time: 2hrs 36mins

Name
Class
Date
1.
Barnacles create home sites by attaching themselves to whales. This neither harms nor benefits the whales.
a)
commensalism
b)
parasitism
c)
mutualism
2.
Hermit crabs live in shells made and then abandoned by snails. This neither harms nor benefits the snails.
a)
commensalism
b)
parasitism
c)
mutualism
3.
Oxpeckers feed on the ticks found on rhinoceros. Both species benefit.
a)
commensalism
b)
parasitism
c)
mutualism
4.
A flea feeds on a mouse's blood to the mouse's detriment.
a)
commensalism
b)
parasitism
c)
mutualism
5.
A tick and a dog have this type of relationship.
a)
mutualism
b)
commensalism
c)
neutralism
d)
parasitism
6.
In a parasitic relationship, one organism is ___________ and one organism is benefiting. 
a)
helped
b)
harmed
c)
not effected
d)
happy
7.
A clown fish and a sea anemone are in a close relationship. The sea anemone provides shelter and protection for the clown fish. However, the sea anemone is not harmed. This is an example of  ______________________. 
a)
commensalism
b)
parasitic relationship
c)
mutualism 
8.
The lion lives on the savanna. 
a)
habitat
b)
niche
9.
Birds parent their offspring. 
a)
habitat 
b)
niche
10.
a place an organism lives. 
a)
habitat 
b)
niche
11.
the role an organism plays in the environment. 
a)
habitat 
b)
niche
12.
The average number of people living in an area
a)
population distribution
b)
population density
c)
urbanization
d)
population rate
13.

The way in which individuals of a population are spread out is called

a)

population density.

b)

population dispersion.

c)

survivorship.

d)

predation.

14.

Zebra herds that live and move together are an example of what type of dispersion?

a)

clumped dispersion

b)

uniform dispersion

c)

random dispersion

d)

territorial dispersion

15.

The movement of a single caribou into a herd is an example of

a)

immigration.

b)

emigration.

c)

population.

d)

competition.

16.

Which of the following is an example of a density-independent limiting factor?

a)

a parasite

b)

a decrease in prey

c)

a food shortage

d)

a natural disaster

17.

This graph represents a _____ growth curve

a)

Logistic

b)

Exponential

18.
What factor describes when populations decrease because animals are moving out of a population?
a)
Emigration
b)
Limiting Factors
c)
Immigration
d)
Exponential Growth
19.
Which kind of dispersion is #1?
a)
clumped
b)
random
c)
uniform
20.
A tick is a parasite to a horse. Which statement best describes the relationship between the tick and the horse? 
a)
a.  The tick helps the horse get food. 
b)
a.  The tick harms the horse by feeding on its blood. 
c)
a.  The horse harms the tick by feeding on its blood. 
d)
The tick does not affect the horse. 
21.
Which interaction benefits both organisms?
a)
A flea living on a dog
b)
A bee pollinating a flower
c)
A tapeworm living inside an animal
d)
A mosquito biting a person
22.
This is a type of symbiosis where one organism benefits and the other is harmed.
a)
Mutualism
b)
Parasitism
c)
Commensalism
23.
Lice attach to the hairs of the body or head, and then suck blood from the host. This relationship is known as ________. 
a)
Commensalism
b)
Parasitism
c)
Mutualism
d)
Optimism
24.

THE SPECIES THAT REPRODUCE IN A WAY THAT LEADS TO VERY FAST GROWTH ARE CALLED...

a)

R-SELECTED

b)

K-SELECTED

c)

P-SELECTED

d)

Z-SELECTED

25.

THESE SPECIES ONLY MAKE A FEW BABIES IN THEIR LIFETIME AND THEY INVEST IN THEM HEAVILY...

a)

K-SELECTED

b)

R-SELECTED

c)

P-SELECTED

d)

Z-SELECTED

26.

WHICH ARE THE WAYS THAT HUMANS HAVE REDUCED THEIR LIMITING FACTORS?

a)

INCREASED FOOD PRODUCTION

b)

MEDICAL ADVANCES

c)

SEWAGE SYSTEMS

d)

ALL OF THE ABOVE

27.

THE POPULATION HAS BEEN DECLINING SINCE 1962.

a)

TRUE

b)

FALSE

28.

THE HUMAN POPULATION GROWTH HAS SLOWED BECAUSE...

a)

WOMEN ARE CHOOSING JOBS OVER CHILDREN

b)

CONTRACEPTION

c)

WOMEN ARE MORE EDUCATED NOW

d)

ALL OF THE ABOVE

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