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Mrs. Keadle JH Science
Name______________________________ Period_____
Date Assigned____________ Date Due____________ Date Returned __________
Succession Power Point Notes
Directions: Using the Succession Power Point, answer the following questions.
1. What did these events do to the earth?_________________________________________
_________________________________________________________________________
2. How did the events do this? __________________________________________________
_________________________________________________________________________
3. What part of the earth was affected? ___________________________________________
_________________________________________________________________________
4. What differences were there between the two events? ____________________________
_________________________________________________________________________
5. Ecosystems try to maintain _______________________________.
Equilibrium is a state of _____________________________.
Major events can upset the equilibrium: ____________________, ________________,
___________________________, _______________________.
6. Succession is a series of predictable ___________________ that occur in a community over
time.
7. Succession allows and area to _________________________ after a catastrophic event.
8. Succession begins with a _____________________________ species.
9. Once equilibrium is reached, it is called a ______________________ community.
10. Climax communities are ____________________________ for each area.
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Succession Power Point Notes
Mrs. Keadle JH Science
PRIMARY SUCCESSION
11. Primary succession occurs on an area of newly exposed ______________, _____________,
___________________, or any area that has not been occupied by a living community.
12. Primary succession takes a very _______________________ time.
13. Steps of primary succession
a. ________________________ species come in. Mosses and _____________________
help to break down the rock to form soil.
b. Plant __________________ come in on birds, animals, wind or water and begin to
______________________.
c. Eventually, __________________________ succession will lead to a community of
organisms in _____________________________.
14. Example of Primary Succession. Complete the chart with the correct description.
STEPS OF PRIMARY SUCCESSION
1.
2.
3.
4.
5.
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Succession Power Point Notes
Mrs. Keadle JH Science
Other examples of primary succession:
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Succession Power Point Notes
Mrs. Keadle JH Science
SECONDARY SUCCESSION
15. Secondary succession is a series of changes that occur after a disturbance to an
_______________________________ ecosystem.
16. Occurs ___________________________ than primary succession because there is already
__________________________________.
17. Example of Primary Succession. Complete the chart with the correct description.
STEPS OF SECONDARY SUCCESSION
1.
2.
3.
4.
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Succession Power Point Notes
Mrs. Keadle JH Science
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Years after the lava from an erupting volcano destroyed an area, grasses
started to grow in that area. The grasses were gradually replaced by
shrubs, evergreen trees, and finally, by a forest that remained for several
hundred years. The entire process is an example of -
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F
feedback
G
ecological succession
H
plant preservation
J
deforestation
A volcanic eruption covers a wide area of forest with ash, lava, and
volcanic rock.
Which of these describes the first stage of ecological succession that will
begin to return biotic factors to the forest community and return it to a
state of equilibrium?
A
The volcano stops erupting.
B
The lava cools to form rock.
C
Lichens grow on the rocks.
D
The rock melts back into lava.
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Succession Power Point Notes
Mrs. Keadle JH Science
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How does secondary succession
help restore equilibrium to a
region destroyed by a flood?
F
It increases the number and
types of species.
G
It brings back species from
extinction.
H
It stops other floods from
occurring.
J
It decreases the rate of
evolution.
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The role of a pioneer species in
primary succession is to change
a bare habitat into one that is
suitable for other organisms. A
species that is responsible for
primary succession in an
ecosystem is MOST likely able to
A
survive any predator
B
migrate during the winter.
C
live at high altitudes.
D
carry out photosynthesis.
Which of the following sequence MOST likely represents ecological
succession on a recently abandoned wheat field?
F
grasses → flowering plants → shrubs → native trees
G
native trees → shrubs → flowering plants → grasses
H
shrubs → grasses → native trees → flowering plants
J
flowering plants → native trees → shrubs → grasses
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Succession Power Point Notes
Mrs. Keadle JH Science
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A flower bed is created at a school so flowers can be planted in the
Fall.
Over the summer it is uncared for. Which of the following could the
students expect to find when they come back to school?
A
B
C
D
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Succession Power Point Notes
Mrs. Keadle JH Science
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Lichens and moss are the first
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organisms to grow after a volcanic
eruption. These organisms are
known as F
secondary species
G
primary species
H
pioneer species
J
succession species
Why does secondary succession
occur faster than primary
succession?
A
Fewer changes must occur in
secondary succession.
B
There are more pioneer species
in secondary succession.
C
The environmental conditions
are more extreme in primary
succession.
D
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2
There are more trophic levels in
secondary succession.
3
In which of the above scenes will secondary succession most likely occur?
F
1 only
G
2 only
H
3 only
J
1 and 3
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Succession Power Point Notes