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WorksheetsCCHS Env Sys Fall Semester Review: Ecology
Total questions: 22
Worksheet time: 39mins
Name
Class
Date
1.
An abiotic factor is...
a)
a living factor in the ecosystem such as weather
b)
a living factor in the ecosystem such as a plant
c)
a nonliving factor in the ecosystem such as bacteria
d)
a non living factor in the ecosystem such as soil
2.
Decomposition and decay of organic matter are accomplished by the action of
a)
scavengers
b)
bacteria & fungi
c)
viruses & algae
d)
green plants
3.
The events below best represent what ecological process?
a)
the creation of an aquatic ecosystem
b)
primary succession
c)
secondary succession
d)
urban development
4.
In the marine ecosystem diagram, what is lost to the environment at each of the trophic levels of this ecosystem?
a)
nuutrients from the soil
b)
living space for the organisms
c)
food sources
d)
heat
5.
A climax community is able to exist in a certain geographic region for a long period of time because it
a)
alters the climate of the geographic region.
b)
attracts many pioneer organisms.
c)
remains in equilibrium with the environment.
d)
provides a habitat for parasites.
6.
How would an increase in predators affect a habitat’s prey population?
a)
It would decrease.
b)
It would have no effect.
c)
It would increase.
d)
It would increase suddenly and then slowly decrease.
7.
Where does a consumer get its energy?
a)
directly from the sun
b)
make their own food
c)
by eating producers or other consumers
d)
by making their own food or eating producers
8.
Which of the following are more likely to be the pioneer organisms on an area of bare rock?
a)
shrubs
b)
trees
c)
perennial grasses
d)
lichens
9.
Which organism in the food web would receive the least amount of transferred solar energy?
a)
grasses
b)
owls
c)
frogs
d)
field mice
10.
A native species and an invasive species are competing for resources within the same ecosystem. The invasive species is more likely to survive than the native species in which of the following situations?
a)
Both the native species and the invasive species thrive on the same food source.
b)
The native species is immune to certain pathogens in the ecosystem.
c)
Predators prey on both native and invasive species.
d)
The invasive species has no predators in the ecosystem.
11.
Which term best describes line B in the graph?
a)
niche of the species in the environment
b)
biodiversity in the environment
c)
carrying capacity of the environment
d)
number of the populations in the environment
12.
What percent of energy is transferred to each trophic level from the level before it?
a)
100%
b)
90%
c)
10%
d)
1%
13.
Burmese pythons are large snakes that have been introduced into the Florida Everglades ecosystem. Burmese pythons and alligators hunt the same prey. One likely effect of the introduction of pythons is that
a)
alligators will have more prey available
b)
pythons will become native to Florida
c)
alligator populations will decline
d)
pythons will become an endangered species
14.
Which statement best describes an event in the process in the diagram?
a)
Community B modifies the environment, making it
suitable for community C
b)
Community D modifies the environment, making it
suitable for community C.
c)
Community E will develop into community A, if the
environment stays stable
d)
Community A organisms will develop into community D
organisms immediately
15.
Letter A in the pyramid represents
a)
scavengers
b)
producers
c)
carnivores
d)
herbivores
16.
Which statement correctly describes organisms in this ecosystem?
a)
organisms
in level B obtain their energy direction from the sun
b)
Organisms in level C obtain their nutrients directly
from organisms in level D
c)
Organisms in level A are herbivores
d)
Organisms in level D are heterotrophic
17.
Which of the following are more likely to be the pioneer organisms on an area recently disrupted by a forest fire?
a)
shrubs
b)
trees
c)
grasses
d)
lichens
18.
An observable trend in the wolf and moose data between 1980 and 1995 is
a)
as the wolf population decreases, the moose population
increases
b)
as the wolf population decreases, the moose population
decreases
c)
as
the number of wolves increases, the moose numbers increases
d)
the numbers of wolves and moose stay constant
19.
Which graph best shows the changes in a population that completely consume a limited food supply?
a)
graph 1
b)
graph 2
c)
graph 3
d)
graph 4
20.
Which sequence of organisms represents a food chain within the food web?
a)
tadpole --> algae -->
daphnia --> back
swimmers
b)
sedges --> ants --> frogs --> kookaburras
c)
algae --> daphnia --> decayed material --> bacteria
d)
dragonflies --> ants --> centipedes --> algae
21.
After a forest fire, what is the most likely order in which these stages appear?
a)
D --> C --> A --> B
b)
B --> D --> C -->A
c)
A --> B --> C --> D
d)
B --> C --> D --> A
22.
A biotic factor is
a)
A living factor in the ecosystem such as weather
b)
A living factor in the ecosystem such as a plant
c)
A nonliving factor in the ecosystem such as
bacteria
d)
A nonliving factor in the ecosystem like the
soil
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