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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
huddling together to stay warm
B
fighting over mates
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
competition
B
carrying capacity
C
immigration
D
overpopulation
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
mutualism
B
competition
C
parasitism
D
commensalism
4) The need for organisms to rely on the same resources causes
A
biotic potential
B
competition
C
population growth
D
carrying capacity
5) The number of organisms in a specific area is
A
a community
B
the population density
C
the population growth
D
the carrying capacity
6) The number of robins that hatch in a year is the population's
A
biotic potential
B
exponential growth
C
birthrate
D
carrying capacity
7) A robin population that reaches its biotic potential probably shows
A
low growth
B
negative growth
C
exponential growth
D
no growth
8) An organism that uses sunlight to make food molecules is a(n)
A
consumer
B
producer
C
carnivore
D
herbivore
9) Which is NOT part of Earth's biosphere?
A
surface of the Moon
B
North American continent
C
low atmosphere
D
bottom of the Pacific ocean
10) Which is a limiting factor for a cottontail rabbit population on the prairie in Oklahoma?
A
a large amount of shelter space
B
an abundance of coyotes in the area
C
a large amount of food
D
an unpolluted river in the ecosystem
11) Which factor does NOT normally affect human population size?
A
birthrate
B
population movement
C
death rate
D
lack of resources
12) Which is defined as demand for resources in short supply in a community?
A
competition
B
biotic potential
C
density
D
limiting factor
13) Which is NOT a possible result of overpopulation?
A
more competition
B
damage to soil
C
increased carrying capacity
D
loss of trees and plants
14) What does a population undergo when it has no limiting factors?
A
exponential growth
B
migration
C
extinction
D
population movement
15) What is the term for all species living in the same ecosystem at the same time?
A
habitat
B
population
C
community
D
biosphere
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 insects in the swamp
B
all the types of birds in a forest zoo
C
all meerkats in a refuge
D
all the types of cats in a zoo
*select an answer for all questions
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