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Ecology 14

Total questions: 22

Worksheet time: 16mins

Name
Class
Date
1.
The idea that no two species within an ecosystem can occupy the exact same niche
a)
niche overlap
b)
niche differentiation
c)
competitive exclusion
d)
niche decay
2.
An organism's _________ is defined as the environment in which it lives.
a)
habitat
b)
niche
c)
social structure
d)
ecosystem
3.
Which of the following statements best describes a specialist?
a)
adapted to a large range of environments
b)
adapted to a small range of environments
c)
adapted to any environment
d)
poorly adapted to the environment
4.
Which symbols best describe mutualism?
a)
+,+
b)
+,-
c)
+,0
d)
-,0
5.
Which symbols best describe parasitism?
a)
+,+
b)
+,-
c)
+,0
d)
-,0
6.
Which symbols best describe commensalism?
a)
+,+
b)
+,-
c)
+,0
d)
0,0
7.
A tick and a dog have this type of relationship.
a)
mutualism
b)
commensalism
c)
neutralism
d)
parasitism
8.
Cattle egrets are birds that forage in fields among cattle. The egrets get easy access to food and the cattle don't care if they are there or not.
a)
mutualism
b)
commensalism
c)
competition
d)
parasitism
9.
A wrasse fish feeds on the parasites found on the black sea bass's body. Both species benefit. 
a)
Mutualism 
b)
Parasitism 
c)
Commensalism 
10.
Yucca flowers are pollinated by yucca moths. The moths lay their eggs  in the flowers where  the larvae hatch and eat some of the developing seeds. Both species benefit.  
a)
Mutualism 
b)
Parasitism 
c)
Commensalism 
11.
A close, long-term relationship in which 2 different organisms live in close association with each other. 
a)
Carrying Capacity
b)
Coexistence
c)
Limiting Factor
d)
Symbiosis
12.

Commensalism is a symbiotic relationship in which what occurs between the organisms?

a)

both organisms are harmed

b)

one benefits, the other is unaffected

c)

one benefits, the other is harmed

d)

one benefits by eating the other

13.
Natural disasters such as flooding and tornadoes are linked to ________________.
a)
primary
b)
secondary
c)
old field
d)
ecosystem
14.
After a forest fire, an ecosystem would start regrowth through -
a)
primary succession
b)
secondary succession
c)
climax community
d)
limiting factors
15.
Which catastrophic event will most likely have the effect of returning an ecosystem to primary succession?
a)
A tornado
b)
A volcanic eruption
c)
A flood
d)
A drought
16.

At what population was carrying capacity met?

a)

250

b)

1000

c)

400

d)

720

17.

Exponential population growth can be described as

a)

growth when resources are limited

b)

a j-shaped curve

c)

a s-shaped curve

d)

growth that reaches carrying capacity

18.

Logistic population growth can be described as

a)

growth when resources are limited

b)

a s-shaped curve

c)

reaching carrying capacity

d)

all of the above

19.

What limits Population Growth?

a)

birth rates increasing

b)

resources being used up

c)

natural selection taking place

d)

none of the above

20.

Density-independent limiting factors to population growth includes

a)

stress from overcrowding

b)

parasitism

c)

competition

d)

natural disasters

21.

As resources become less available the growth of a population

a)

slows or stops

b)

decreases or increases

c)

up or down

d)

in or out

22.

What is a condition that halts population growth?

a)

limiting factors

b)

renewable resources

c)

climate

d)

conservation

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