SX05 Bke Adapted Tests.Fm
NameDateClass
Populations and Communities ■ Adapted Test
Populations and Communities
Multiple Choice
Write the letter of the correct answer on the line at the left.
____ 1. A living thing is also called a(an)
a.species.
b.organism.
c.niche.
____ 2. What is a group of organisms that are physically similar and can mate with one another?
a.species
b.population
c.community
____ 3. An ecosystem includes the community of organisms in an area, along with the
a.biotic factors.
b.nonliving surroundings.
c.carrying capacity.
____ 4. The largest population that an area can support is called its
a.population density.
b.primary succession.
c.carrying capacity.
____ 5. Which could be a limiting factor in an environment?
a.birth rate
b.weather conditions
c.mutualism
____ 6. What does every organism have that makes it suited to its
specific living conditions?
a.abiotic factors
b.a variety of adaptations
c.a symbiotic relationship
____ 7. Natural selection works because individuals that are suited to
the environment
a.tend to survive and reproduce.
b.prey on all other organisms.
c.are unaffected by limiting factors.
© Pearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved.
4
NameDateClass
Populations and Communities ■ Adapted Test
____ 8. There are three major types of interactions among
organisms: competition, predation, and
a. succession.
b. emigration.
c. symbiosis.
____ 9. What is an organism that lives inside or on another organism
and harms it?
a. a parasite
b. a prey
c. a predator
____ 10. In which environment does secondary succession occur?
a. where an area or rock is uncovered by a melting sheet
of ice
b. where a volcano has erupted and created a new island
c. where the land is cleared of trees because of logging
Completion
Read each word in the box. In each sentence below, fill in one of the words. Not all words will be used.
estimate habitatcommunity
ecology succession competition
11.All the different populations that live together in an area make up a(n)
12.The study of how living things interact with each other and their environment is called
13.A(an)is a reasonable guess about a number.
14.The struggle between organisms to survive is called
15.The natural series of changes that occurs in area over time is called
© Pearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved.
5
NameDateClass
Populations and Communities ■ Adapted Test
True or False
If a statement is true, write true. If it is false, write false.
______16. One area may contain many habitats.
______17. All the different species living in an area form a
population.
______18. Counting members of a population to determine its
size is called indirect observation.
______19. Emigration means leaving a population.
______20. An organism’s specific role in its habitat is its niche.
Using Science Skills
Pheasants were introduced onto an island. The graph below shows what happened to the pheasant population over a 25-year period. Use the graph to answer questions 21, 22, and 23.
Pheasant Population
____ 21. Interpreting Graphs How did the pheasant population
change between year 10 and year 18?
a.The population decreased.
b.The population stayed the same.
c.The population increased.
____ 22. Inferring What is a possible explanation for the change that
occurred between year 10 and year 18?
a.The pheasants’ main food source grew tremendously.
b.The pheasants’ main food source remained the same.
c.The pheasants’ main food source became scarce.
© Pearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved.
6
NameDateClass
Populations and Communities ■ Adapted Test
____ 23. Predicting In the winter of year 25, a population of coyotes
came to the island. Coyotes are predators that hunt pheasants as
prey. What do you think will happen to the pheasant population?
a.The population will likely decrease.
b.The population will likely stay the same.
c.The population will likely increase.
Using Science Skills
The graph shows the population of mallard ducks, snapping turtles, and raccoons living in and around a pond. Snapping turtles prey on ducklings. Raccoons prey on duck eggs and turtle eggs. Use the graph below to answer questions 24 and 25.
____ 24. Interpreting Graphs In what year did a sudden change
occur in the size of all three populations?
a. 1990
b. 1991
c. 1992
____ 25. Inferring Which explanation is a possible reason why the
duck and turtle populations changed in that year?
a. More raccoons emigrated to the area around the pond.
b. A parasite may have killed many of the raccoons.
c.The raccoon birth rate may have increased.
© Pearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved.
7