Energy Flow
Name:
1.
Date:
The diagram below illustrates the relationships
between organisms in an ecosystem.
4.
Base your answer(s) to the following question(s)
on the diagram of a food web and on your
knowledge of biology.
In addition to sunlight, which factor would need to
be added to make this a stable ecosystem?
A.
predators
B.
prey
C.
decomposers
D. herbivores
2.
Describe the role of scavengers in an ecosystem.
3.
Which type of model provides the most complete
representation of the feeding relationships within a
community?
A.
a material cycle
B.
a predator-prey association
C.
a food chain
If the population of mice is reduced by disease,
which change will most likely occur in the food
web?
A.
The cricket population will increase.
B.
The snake population will increase.
C.
The grasses will decrease.
D. The deer population will decrease.
5.
D. a food web
A partial food web is represented in the diagram
below.
Letter X most likely represents
page 1
A.
autotrophs
B.
carnivores
C.
decomposers
D. parasites
6.
Which sequence shows a correct pathway for the
ow of energy in a food chain?
A.
bacteria !grass !fox !owl
B.
grass !grasshopper !frog !snake
C.
fungi !beetle !algae !mouse
8.
Which sequence best represents the ow of energy
in the cartoon below?
D. algae !snake !duck deer
7.
Base your answer(s) to the following question(s)
on the diagram accompanying and on your
knowledge of biology.
State one reason that algae form the base of this
pyramid.
A.
prey ! predator
B.
host ! parasite
C.
producer ! herbivore
D. autotroph ! carnivore
9.
page 2
Which process provides the initial energy to
support all the levels in the energy pyramid shown
below?
A.
circulation
B.
photosynthesis
C.
active transport
D. digestion
Energy Flow
10.
An energy pyramid containing autotrophs and
other organisms from a food chain is represented
below.
12.
Base your answers to the following question on
the diagram below and on your knowledge of
biology. The diagram represents three groups of
organisms that are part of an ecosystem.
Groups of Organisms
Carnivores would most likely be located in
A.
level I, only
B.
level I and level II
C.
level III, only
Animals
Fungi
A
B
C
Explain the role of these groups of organisms in
the cycling of materials and the transfer of energy
in an ecosystem. In your answer, be sure to:
explain why an ecosystem requires a constant
input of energy
explain how organisms in group B obtain energy
D. level II and level III
11.
Plants
explain the role of organisms in group C in the
ecosystem
The diagram below represents a food chain made
up of organisms found in a eld.
identify the process used by all three groups of
organisms to make energy available to their
cells to carry out life functions
Which row in the chart correctly identi es
characteristics that can be associated with the
members of this food chain?
Row
Producer
Consumer
Autotroph
Heterotroph
(2)
mouse
owl
snake
mouse
(4)
owl
snake
corn
(1)
(3)
corn
corn
snake
owl
corn
mouse
corn
owl
snake
page 3
Energy Flow
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Energy Flow
1.
Answer:
Points:
2.
Answer:
C
1
Points:
Scavengers remove dead organisms from
the environment. or Scavengers break
down dead organisms.
1
3.
Answer:
Points:
D
1
4.
Answer:
Points:
A
1
5.
Answer:
Points:
A
1
6.
Answer:
Points:
B
1
7.
Answer:
Points:
They are producers or They contain the
most energy.
1
8.
Answer:
Points:
C
1
9.
Answer:
Points:
B
1
10.
Answer:
Points:
C
1
11.
Answer:
Points:
Row (3)
1
12.
Answer:
Points:
Example answer: energy is always lost as
it is transferred through the ecosystem,
some group B animals eat group A plants,
organisms in group C break down dead
organisms and return nutrients to the soil,
cellular respiration
1
1/4/2022