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Name: ________________________ Class: ___________________ Date: __________
ID: A
Chapter 3: Pop Quiz
Modified True/False
Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement tr ue.
____
1. Adaptive radiation occurs when species adapt differently to changes in the environment and become
specialized to exploit different niches.
____
2. Soil compaction causes increased run-off, which in turn will increase the level of carbon in the
environment.
Multiple Choice
Identify the choice that best completes the statement or answers the question.
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3. Which of the following brings about chemical changes on the surfaces of rocks?
a. shrubs
c. grasses
b. lichens
d. tree roots
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4. Which of the following describes a climax community?
I.
II.
III.
a.
b.
____
It changes rapidly.
It remains dominant for an indefinite period.
It is the final community that will exist in a mature, stable ecosystem.
I. and II. only
I. and III. only
c.
d.
II. and III. only
I., II., and III.
5. Primary succession would occur in which of the following locations?
a. a neglected yard
b. abandoned farmland
c. a clear-cut area due to logging
d. an area covered with lava that has cooled after a volcanic eruption
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Name: ________________________
ID: A
Use the following diagram to answer the next four questions.
____
6. Which of the following is related to the ecological process shown above?
a. Climax communities exist at every stage.
b. Only new plant species will colonize the new ecosystem.
c. Ecosystems tend to change over time until a stable community is established.
d. A natural disturbance occurs at the beginning of each stage in the ecological
process.
Use the following diagram to answer the next two questions.
____
7. The pond shown above is in the first stage of secondary succession.
a. The statement is supported by the diagram.
b. The statement is refuted by the diagram.
c. The statement is neither supported nor refuted by the diagram.
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Name: ________________________
____
ID: A
8. Which of the following may give rise to adaptive radiation?
I.
II.
III.
a.
b.
extinctions that empty ecological niches
adaptations that open up many new ecological niches to organisms
organisms that colonize a new area, such as an isolated island, and are free from
competition with other species
I. and II. only
I. and III. only
c.
d.
II. and III. only
I., II., and III.
Problem
9. How might draining bogs in British Columbia affect the environment? Give two examples.
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ID: A
Chapter 3: Pop Quiz
Answer Section
MODIFIED TRUE/FALSE
1. ANS:
LOC:
KEY:
2. ANS:
T
PTS: 1
DIF: Easy
B3-1
TOP: How Changes Occur Naturally in Ecosystems
adaptive radiation | natural selection
MSC: K
F
Soil compaction causes increased run-off, which in turn will increase the level of nitrogen in the
environment.
PTS: 1
DIF: Average
KEY: soil compaction
LOC: B1-10
MSC: U
TOP: How Humans Influence Ecosystems
MULTIPLE CHOICE
3. ANS:
TOP:
MSC:
4. ANS:
TOP:
KEY:
5. ANS:
TOP:
KEY:
6. ANS:
TOP:
MSC:
7. ANS:
TOP:
KEY:
8. ANS:
TOP:
MSC:
B
PTS: 1
DIF: Easy
How Changes Occur Naturally in Ecosystems
K
C
PTS: 1
DIF: Easy
How Changes Occur Naturally in Ecosystems
climax community | ecological succession
D
PTS: 1
DIF: Easy
How Changes Occur Naturally in Ecosystems
ecological succession | primary succession
C
PTS: 1
DIF: Average
How Changes Occur Naturally in Ecosystems
U
B
PTS: 1
DIF: Average
How Changes Occur Naturally in Ecosystems
ecological succession | secondary succession
D
PTS: 1
DIF: Difficult
How Changes Occur Naturally in Ecosystems
H
1
LOC: B3-1
KEY: pioneer species | lichen
LOC: B3-1
MSC: K
LOC: B3-1
MSC: K
LOC: B3-1
KEY: ecological succession
LOC: B3-1
MSC: U
LOC: B1-10
KEY: adaptive radiation
ID: A
PROBLEM
9. ANS:
The two examples could include the following:
i) Draining bogs affects the volume and timing of water flowing through nearby waterways and
ground water. This change in water flow, in turn, affects the growth of the plants in the waterways
and the animals that depend on them. This will reduce the number of plant and animal species and,
therefore, reduce the biodiversity of the area.
ii) Draining bogs releases carbon dioxide and methane into the environment, which contributes to
climate change.
PTS: 2
DIF: Average
KEY: bog | wetland
LOC: B1-10
MSC: U
2
TOP: How Humans Influence Ecosystems