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Test Description: Chapter 21 Review
Instructions: Answer all questions to get your test result.
1) One example of competition among members of a meerkat population is
A
fighting over mates
B
huddling together to stay warm
C
warning others of danger
D
teaching young to search for food
2) Rabbits move into a new field where there is plenty of room to dig new burrows. This is an example of
A
overpopulation
B
carrying capacity
C
immigration
D
competition
3) A shrimp removes and eats the parasites from the gills of a fish. The fish stays healthier because the parasites are removed. The relationship is
A
parasitism
B
mutualism
C
competition
D
commensalism
4) The need for organisms to rely on the same resources causes
A
population growth
B
carrying capacity
C
biotic potential
D
competition
5) The number of organisms in a specific area is
A
the population density
B
the population growth
C
the carrying capacity
D
a community
6) The number of robins that hatch in a year is the population's
A
biotic potential
B
exponential growth
C
carrying capacity
D
birthrate
7) A robin population that reaches its biotic potential probably shows
A
no growth
B
exponential growth
C
negative growth
D
low growth
8) An organism that uses sunlight to make food molecules is a(n)
A
carnivore
B
herbivore
C
producer
D
consumer
9) Which is NOT part of Earth's biosphere?
A
North American continent
B
low atmosphere
C
bottom of the Pacific ocean
D
surface of the Moon
10) Which is a limiting factor for a cottontail rabbit population on the prairie in Oklahoma?
A
an unpolluted river in the ecosystem
B
a large amount of food
C
an abundance of coyotes in the area
D
a large amount of shelter space
11) Which factor does NOT normally affect human population size?
A
death rate
B
population movement
C
lack of resources
D
birthrate
12) Which is defined as demand for resources in short supply in a community?
A
biotic potential
B
density
C
competition
D
limiting factor
13) Which is NOT a possible result of overpopulation?
A
loss of trees and plants
B
more competition
C
increased carrying capacity
D
damage to soil
14) What does a population undergo when it has no limiting factors?
A
extinction
B
population movement
C
exponential growth
D
migration
15) What is the term for all species living in the same ecosystem at the same time?
A
community
B
habitat
C
biosphere
D
population
16) Which type of relationship includes mutualism and parasitism?
A
symbiosis
B
cooperation
C
predation
D
competition
17) Which is a population?
A
all the types of birds in a forest zoo
B
all the types of insects in the swamp
C
all the types of cats in a zoo
D
all meerkats in a refuge
*select an answer for all questions
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