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BIOL 100 Logistic Population Growth

Total questions: 22

Worksheet time: 16mins

Name
Class
Date
1.

Elephants typically have one offspring every few years that they will take care of for 2-3 years and elephants live long long lives.

a)

Elephants exhibit exponential growth.

b)

Elephants exhibit logistic growth.

c)

Elephants have a performance curve.

2.
When a population grows past the ecosystem's carrying capacity, what happens to the population?
a)
Continues to grow
b)
The population starts to die off to return to carrying capcity
c)
The population will go extinct due to lack of resources
d)
The population grows then finds a new carrying capacity
3.
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
4.
Which of the following would INCREASE the carrying capacity of an ecosystem?
a)
increase in predators
b)
disease
c)
increase in available food
d)
drought
5.

If you are big, long lived and have only a few offspring over your life and provide a lot of parental care you are described as...

a)

K- selected

b)

r- selected

c)

Q- selected

d)

w- Selected

6.
Largest number of individuals of a population that the environment can support...  
a)
carrying capacity
b)
population crash
c)
lag phase
d)
mutualism
7.

What type of population growth is depicted in this graph?

a)

exponential growth model

b)

logistic growth model

c)

performance curve

8.

Species that grow logistically tend to

a)

have few high quality offspring

b)

are larger

c)

are longer lived

d)

have parental care

e)

exploit stable, renewable resources

9.
The largest number of individuals in a species that an environment can support long term
a)
carrying capacity
b)
emigration
c)
immigration
d)
population density
10.
Carrying capacity is represented by which letter?
a)
r
b)
L
c)
K
d)
c
11.
What is the carrying capacity of the following graph?
a)
1000
b)
8000
c)
800
d)
600
12.
What point on the graph represents the carrying capacity?
a)
A
b)
B
c)
C
d)
D
13.

Due to social stress from a very large colony, large numbers of female lemmings miscarry their young and fail to reproduce.

a)

Density-Dependent

b)

Density-Independent

14.

Many fish die due to a drastic change in water temperature.

a)

Density-Dependent

b)

Density-Independent

15.

An extensive drought in the plains threatens wildebeest, giraffe, zebra, and springbok populations.

a)

Density-Dependent

b)

Density-Independent

16.

Which of the following is a density-dependent limiting factor?

a)

human activities

b)

unusual weather

c)

competition for food resources

d)

natural disaster

17.

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

a)

natural disaster

b)

predation

c)

disease

d)

parasitism

18.

Which of the following would NOT be an example of a density dependent limiting factor?

a)

fire

b)

disease

c)

lack of food

d)

space

19.

Which of the following would NOT be an example of a density independent factor?

a)

predation

b)

tornado

c)

hurricane

d)

fire

20.

Which of the following are examples of a density independent factors?

a)

forest fire

b)

seasonal cycles

c)

storms

d)

disease

21.

Which of the following are density dependent factors?

a)

competition for resources

b)

predation

c)

disease

d)

natural disasters

22.

What would human alterations of the environment be considered? Ex. Cutting down the rain forests

a)

Density-independent

b)

Density-dependent