Modified True/False
Indicate
whether the sentence or statement is true or false. If false,
change the identified word or phrase to make the sentence or statement
true.
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1. |
Monitoring population size and population density is not important
in preventing the loss of species. ____________________
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2. |
Population density provides meaningful information about
changes in the population status of a species. ____________________
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3. |
A
pyramid of numbers is always pyramid shaped. ____________________
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4. |
In
nature, species often show random dispersion. ____________________
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5. |
Species occupying the same niche can reduce competition by resource
partitioning. ____________________
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6. |
Prey
species use survival strategies to provide some protection against
their predators. ____________________
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7. |
Population size is the only factor that determines Earth’s
carrying capacity. ____________________
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8. |
An
ecological footprint is an indicator of what area of land is
required to support an individual or society. ____________________
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9. |
People can potentially obtain more food energy by consuming from
the lower trophic levels of a food chain. ____________________
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10. |
The
public should not worry about preventing pollution because there
are methods for cleaning it up. ____________________
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Multiple Choice
Identify
the letter of the choice that best completes the statement or answers
the question.
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11. |
Which
of the following represents a challenge for environmental scientists?
a. |
The
data collected are mostly quantitative. |
b. |
It is sometimes impossible to conduct controlled
experiments. |
c. |
Field work is always dangerous. |
d. |
Field
work is too time-consuming and expensive. |
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12. |
Rats
tend to be found next to barns and silos but not in the middle of fields.
Which of the following best describes the population dispersion of rats?
a. |
clumped |
c. |
random |
b. |
uniform |
d. |
scattered |
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13. |
You
are walking along the street and you observe a broken window in a house.
There is a baseball field across the street, and the broken window faces
in that direction. You think “Someone must have hit a baseball
from the field and broken the window.” How would you classify this
thought?
a. |
a
conclusion |
c. |
an
inference |
b. |
a hypothesis |
d. |
an observation |
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14. |
A
population of cockroaches in a restaurant starts with 10 individuals
brought in with produce. In one month, 100 cockroaches are born and
30 die. Assuming that the reproductive rate remains constant, how
many cockroaches will there be at the end of three months? (Hint:
Count the original 10 in your calculations for the first month.)
a. |
30 |
c. |
220 |
b. |
70 |
d. |
3430 |
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15. |
Which
of the following is an example of a closed population?
a. |
a
group of frogs in a marsh in British Columbia |
b. |
a herd of dairy cows living on an Ontario
farm |
c. |
a
flock of geese in northern Manitoba |
d. |
a school of fish in Lake Ontario |
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16. |
A
population reached a certain size, leveled off, and became stable. Which
of the following is the most appropriate description?
a. |
The population reached the carrying capacity
of the environment. |
b. |
The biotic potential of the environment
decreased. |
c. |
Natality and mortality were equal. |
d. |
Another
species in the same niche competed with the population. |
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17. |
If
the world’s population grew by 2% in 1960, by what year should
it have doubled if the growth rate remained the same?
a. |
1995 |
c. |
2020 |
b. |
2010 |
d. |
2060 |
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18. |
Complete the following analogy: Habitat is to address as niche
is to _______________.
a. |
biome |
c. |
house |
b. |
way of life |
d. |
food source |
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19. |
An
individual with a small ecological footprint would practise which of
the following activities?
a. |
having
high resource consumption |
c. |
using
disposable products |
b. |
eating large amounts of imported foods |
d. |
using
solar-powered technologies |
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20. |
Which
of the following does not represent a probable result of global warming?
a. |
The
global average surface temperature has increased by 0.6°C. |
b. |
Snow
cover and extent of ice have decreased in the north and south
polar regions. |
c. |
Some
species have become extinct because of loss of habitat. |
d. |
Fossil
fuel burning has caused an increase in CO2 concentration
in the atmosphere. |
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21. |
Birds
find shelter and build nests in trees without harming the trees. What
is the term for the symbiotic relationship between the birds and the
trees?
a. |
mutualism |
c. |
commensalism |
b. |
parasitism |
d. |
predation |
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Matching
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Match each term to its brief description.
a. |
Species
that warn of environmental problems |
k. |
Several
populations living in a geographic area |
b. |
Meat eaters |
l. |
A group of individuals of one species |
c. |
All
the living and nonliving things in an area |
m. |
Species
that are critical to their ecosystem |
d. |
Species native to an area |
n. |
A producer that uses solar energy |
e. |
Eaters
of meat and plants |
o. |
A
producer that uses chemical energy |
f. |
The environment where a species usually
lives |
p. |
Eaters
of particles of dead material |
g. |
Species introduced to an area |
q. |
The entire living system on Earth |
h. |
Plant
eaters |
r. |
Consumer |
i. |
Parts of the biosphere with similar characteristics |
s. |
Cause
decay of organic material |
j. |
Eaters of dead organisms |
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22. |
autotroph
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23. |
biome
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24. |
biosphere
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25. |
carnivores
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26. |
chemotroph
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27. |
community
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28. |
decomposers
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29. |
detritus feeders
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30. |
ecosystem
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31. |
endemic species
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32. |
exotic species
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33. |
habitat
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34. |
herbivores
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35. |
heterotroph
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36. |
indicator species
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37. |
keystone species
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38. |
omnivores
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39. |
population
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40. |
scavengers
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