AnswersCA-Life Science B High SchoolLab: Interdependence of Organisms

Energy Flow in Ecosystems Answers

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1
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Why are mushrooms important to the food chain?

A
They recycle nutrients into the ecosystem.
B
They produce food energy for other living things.
C
They recycle oxygen into the atmosphere.
D
They consume excess herbivores in the ecosystem.
4

What might happen to the organisms in the food web below if the number of phytoplankton and vegetation drastically decreased?

Question illustration
A
The small fish and wading birds would be affected.
B
Only the small fish would be affected.
C
The small fish, bivalves, and invertebrates would be affected.
D
The entire food web would be affected.
5

Which organisms are heterotrophs?

A
photosynthesizers
B
producers
C
consumers
D
plants
7

From the producer level to which level does energy flow directly?

A
decomposer
B
tertiary consumer
C
secondary consumer
D
primary consumer
8

Which process do plants use to turn sunlight into food energy?

A
photosynthesis
B
cellular respiration
C
transpiration
D
evaporation
9

A diagram illustrates that grass is eaten by insects, birds, and mice. The insects are eaten by hawks, snakes, and toads. The birds and mice are eaten by foxes, hawks, and snakes. The toad is also eaten by the snake. Which best describes the diagram?

A
pyramid
B
food chain grid
C
food web
D
trophic level
10

What is shown in the image below?

Question illustration
A
food chain
B
trophic chain
C
food web
D
energy web
11

Which organism is a primary consumer in the food web below?

Question illustration
A
herbivorous duck
B
bald eagle
C
osprey
D
vegetation
14

Which kind of organism is an autotroph?

A
consumer
B
producer
C
decomposer
D
herbivore
15

What might happen to the organisms in the food web below if the number of phytoplankton and vegetation drastically decreased?

Question illustration
A
The small fish and wading birds would be affected.
B
Only the small fish would be affected.
C
The small fish, bivalves, and invertebrates would be affected.
D
The entire food web would be affected.
16

Which is an interconnection of food chains in an ecosystem?

A
food web
B
trophic chain
C
energy web
D
producer web
17

From the producer level to which level does energy flow directly?

A
decomposer
B
tertiary consumer
C
secondary consumer
D
primary consumer
19

Maggots feed on dead and decaying organisms for energy. What are maggots?

A
autotrophs
B
producers
C
decomposers
D
heterotrophs

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