UNIT 1 ECOLOGY
Biology Review PowerPoint
Review Question 1:
Which of the following chain of energy flow would
give the end consumer the least amount of
energy?
A. Grass grasshopper  robin  hawk
B. Grass mouse  wolf
C. Grass grasshopper frog snake hawk
D. Grass mouse  snake  hawk
Where does 90% of the Energy “lost” actually go when E is
transferred from one trophic level to the next?
Review Question 2:
Fungi, such as mushrooms and
molds, get their nutrition primarily
by —
A producing food through
Why are decomposers
important?
chemosynthesis
B preying on other organisms
C decomposing dead organic matter
Dparasitic relationships with plants
Review Question 3
If a population grows larger than
the carrying capacity of the
environment, the ______.
A death rate may rise
B birth rate may fall
What is carrying
C birth rate may rise
capacity?
Ddeath rate may fall
Review Question 4
N
Y
R
e
g
e
n
t
s
B
I
O
Review Question 6
An example of a population is1 all the Zapus hudsonicus in California
2 all the fish in Lake Erie
3 the number of different species of Felis in a
geographic area
4 the number of maples, white oaks, spruce,
gray squirrels, and owls in a forest
Review Question 7
Which of the following practices is MOST likely
to slow the buildup of CO2 in the atmosphere?
From: Georgia-End-of-Course Assessments, Spring 2004
A
C
B
D
increased use of tropical rain forest areas for
agriculture
decreased pesticide use in favor of biological
controls
increased use of genetically engineered plants
decreased use of fossil fuels
Review Question 8
The maintenance of a self-sustaining
ecosystem requires a 1 constant temperature
2 greater number of herbivores than
producers
3 cycling of materials between organisms
and their environment
4 soil that is acidic
Review Question 9
A food web is shown below:
Which organisms are necessary for the recycling of
Nitrogen?
1 frogs
2 snakes
3 grasshoppers
4 bacteria
Review Question 10
In a forest ecosystem, which is an abiotic
factor?
From: North Carolina End-of-Course Assessments, Goal 5
A
B
C
D
amount of rainfall
type of trees
number of reptiles
size of deer
Why is this
considered
abiotic?
Review Question 11
What is the main cause of fish
kills in rivers polluted by
fertilizers?
From: Virginia SOL Assessments, 2002 Biology
A
C
B
D
Decreased mineral sources
Increased water temperatures
Decreased oxygen levels
Increased water levels
Review Question 12
The diagram below shows a food pyramid.
Which level of the food
pyramid contains
consumers
with the least biomass?
1 snakes
3 crickets
2 frogs
4 green plants
Review Question 13
Which letter represents a photosynthetic organism?
a. A
b. B
c. D
d. E
Review Question 14
Study the table below:
Which property of the local ecosystem is being described?
a. Food production
b. Abiotic conditions
c. Biodiversity
d. Energy interdependence
Last Question!
The above graph shows how dissolved O2 and CO2 levels
changed in a pond over a 24-hour period. What caused the
decrease in O2 concentration during the night?
A increased evaporation
C increased respiration
B decreased photosynthesis
D decreased temperatures