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WorksheetsUnit 7 Review: Overpopulated
Total questions: 20
Worksheet time: 15mins
Name
Class
Date
1.
In this graph, the factor controlling the population of sea urchins is:
a)
The presence of predators
b)
The presences of predators and the availability of food
c)
Competition from other herbivores
d)
The availability of food
2.
What type of growth model is this?
a)
exponential growth
b)
logistic growth
c)
Type I curve
d)
Type III curve
3.
The largest number of individuals of a population that the environment can support is called the...
a)
carrying capacity
b)
limiting factor
c)
exponential growth
d)
biodiversity
4.
Plants and animals that have migrated to areas where they did not originate and often displace native species by out-competing them for resources are called...
a)
habitat fragmentation
b)
endangered species
c)
invasive species
d)
extinct species
5.
What type of growth is represented behind?
a)
exponential
b)
logistic
c)
a good kind
d)
representative
6.
What is the carrying capacity of the following graph?
a)
1000
b)
8000
c)
800
d)
600
7.
What is the carrying capacity of the graph?
a)
around 500
b)
more than 500
c)
less than 500
d)
around 600
8.
Food, water, sunlight, air, and soil are resources that are often __________.
a)
limiting factors
b)
sources of biodiversity
c)
not important
d)
found in rocks
9.
If the population of a certain predator increases, there is often _______ its prey
a)
a decrease the population of
b)
an increase of the population of
c)
great news for
d)
no impact on
10.
Any thing or organism that regulates the size of a population is known as __________.
a)
a limiting measure
b)
a limiting factor
c)
carrying capacity
d)
biodiversity
11.
What does a limiting factor do?
a)
makes a population grow large
b)
stops a population from growing large
c)
helps organisms adapt to abiotic factors
d)
provides geographical boundaries for migration
12.
Biodiversity refers to
a)
extinct species
b)
the variety of species on Earth
c)
nonrenewable resources
d)
the rate of species decline
13.
A species that is NOT native to a particular region is called
a)
natural
b)
invasive
c)
endemic
d)
extraordinary
14.
Exotic or invasive species might cause all of the following EXCEPT...
a)
increased biodiversity
b)
loss of biodiversity
c)
disease
d)
loss of native species
15.
What does this picture represent?
a)
species diversity
b)
invasive species
c)
genetic diversity
d)
carrying capacity
16.
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
17.
Which of the following best describes the importance of biodiversity?
a)
It maintains a wide variety of organisms
b)
It allows species to grow above their carrying capacity
c)
It allows populations to adapt ot change
d)
it prevents habitat destruction
18.
Lower biodiversity results in...
a)
A less stable ecosystem
b)
increased ability to adapt to changw
c)
habitat destruction and fragmentation
d)
increased invasive species
19.
Without genetic diversity, a species will most likely...
a)
grow above its carrying capacity
b)
go extinct
c)
become resistant to diseases
d)
fight off an invasive species
20.
Which threat to biodiversity is being displayed?
a)
overexploitation
b)
invasive species
c)
pollution
d)
habitat fragmentation
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