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Population Dynamics Test Review
Test Description: Population Dynamics Test Review
Instructions: Answer all questions to get your test result.
1) An environmental factor that causes a population to decrease is called
A
limiting factor
B
carrying capacity
C
niche
D
symbiosis
2) What is mutualism?
A
both organisms benefit and help each other
B
1 organism is helped and the other is harmed
C
only 1 organism benefits and the other is not harmed
3) What is commensalism?
A
both organisms benefit
B
one organism benefits and the other organism is unaffected
C
one organism benefits and one is harmed
4) Which of the following would be an example of parasitism?
A
Ivy growing on a tree
B
A tick on a deer
C
A bee pollinating a flower
D
A bird riding on a water buffalo
5) In certain ecosystem, there is a population of wolves that feed primarily on a population of rabbits. If there is plenty of rabbit food for several years, the rabbit population increases. What will most likely be the result for the wolf population
A
The wolf population will go extinct
B
The wolf population will decrease
C
The wolf population will stay the same
D
The wolf population will increase
6) True or false: when a population goes above carrying capacity it can run out of resources.
A
True
B
Maybe
C
False
D
Both
7) Why might there be only a few squirrels in a big forest?
A
Not enough soft leaves for making nests
B
Lots of owls live in the forest
C
Squirrels don't like trees
D
oo many tall trees to climb
8) Wolves are hunting a lot of deer. What is the limiting factor for the deer?
A
water
B
food
C
space
D
predation
9) The population of salmon have decreased due to overfishing. Bears have decreased in population. What is the limiting factor for bears
A
food
B
space
C
predation
D
water
10) A ________ is the unique way an organism survives in an ecosystem; how they obtain their food, shelter, and avoid danger.
A
niche
B
carrying capacity
C
competition
D
limiting factor
11) All the prairie dogs living in the Wichita mountains are an example of a(n)
A
population
B
organism
C
community
D
ecosystem
12) The interaction that occurs between two or more organisms when they need the same limited resource is called
A
predation
B
symbiosis
C
competition
D
mutualism
13) Which example does NOT prevent a population from reaching its carrying capacity?
A
bad weather
B
disease
C
plenty of food
D
old age
14) Over time a rabbit population reaches its carrying capacity. Which factor would cause the carrying capacity to decrease?
A
a decrease in the amount of food available per rabbit
B
an increase in the amount of shelter
C
a decrease in the number of predators
D
an increase in the amount of water available per rabbit
15) What is symbiosis?
A
a chemical interaction
B
a close, short-term interaction
C
a distant interaction
D
a close, long-term interaction
16) Dirty water sources are a limiting factor in some communities. Is this an example of a Biotic or Abiotic limiting factor?
A
Abiotic
B
Biotic
17) A population of deer live in a forest. Which factor below would NOT be considered a limiting factor?
A
The size of the forest.
B
The amount of food available in the forest.
C
The amount of offspring each deer have.
D
The amount of water available in the forest.
18) Which of the following would be occupying the same niche?
A
A bobcat chasing after a rabbit
B
A bird sitting on a tree and another bird sitting in a nest
C
A hawk sitting on a tree
D
A bobcat and mountain lion fighting over the same territory
19) As a population reaches its carrying capacity, there is an increase competition for
A
All of the above
B
Mates
C
Food
D
Shelter
20) Which of the following are abiotic limiting factors?
A
Carrying capacities of several species
B
Water, space, and oxygen.
C
The populations of producers in a given habitat.
D
The decomposers in an ecosystem.
*select an answer for all questions
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