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Population Ecology
Test Description: Chapter 4
Instructions: Answer all questions to get your test result.
1) Giraffes, lions, zebras, hyenas, and all the other living things of the Serengeti make up a(n)
A
ecosystem
B
community
C
population
D
biosphere
2) Every spring, many species of bird travel north to the Arctic to breed, and in the fall travel south again for the winter. This is an example of
A
population growth
B
emigration
C
immigration
D
migration
3) You will be conducting a study of the interactions of vegetation, animals, mineral composition of the soil, and water levels in a saltmarsh. You are studying the
A
saltmarsh biosphere.
B
saltmarsh ecosystem.
C
saltmarsh community.
D
saltmarsh population.
4) “All the living things and their physical environment within a given area” best defines
A
a population
B
the biosphere
C
a community
D
an ecosystem
5) A population of wolves is reintroduced into Yellowstone National Park. For the first decade, the wolf population grows exponentially. Then, the population growth slows. The new pattern is known as
A
exponential growth
B
carrying capacity
C
limiting factors
D
logistic growth
6) If 300 deer live within a 20-km2 area, then 15 deer per km2 is the deer ______ for that area.
A
carrying capacity
B
survivorship curve
C
limiting factor
D
population density
7) A grassland experiences a drought that causes most of the plants to die and several watering holes to dry up. The antelope that live on the grassland experience a decrease in population because water and plants are key
A
habitats
B
abiotic factors
C
resources
D
biotic factors
8) In a population of 100 monkeys, you count 48 males and 52 females. This population has an approximately even
A
sex ratio
B
survivorship curve
C
carrying capacity
D
biotic potential
9) A population’s growth rate is determined by births, deaths,
A
immigration, and biotic potential.
B
migration, and biotic potential.
C
immigration, and migration.
D
immigration and emigration
10) An example of a density dependent limiting factor is
A
the amount of available food.
B
a decrease of water due to drought.
C
a sudden flood.
D
an avalanche
*select an answer for all questions
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