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Chapter 2.2
Test Description: The flow of energy in an ecosystem
Instructions: Answer all questions to get your test result.
1) What type of heterotroph consumes only plants for energy?
A
carnivore
B
herbivore
C
detritivores
D
omnivore
2) Each step in a food chain or web is called-
A
a grade level
B
a trophic level
C
a height increase
D
a population level
3) Where do all levels in a food chain or web, except a the first level, get their energy?
A
by producing it
B
from the level after it
C
from within its level
D
from the level before it
4) Why would an ecologist use a food web instead of a food chain?
A
Food webs give a more accurate picture of how energy flows in an ecosystem.
B
A food chain is too complex for people to understand easily.
C
Webs are easier to construct than a chain.
D
Webs are more simplified then a chain
5) The amount of energy used by the organisms at each level in an ecological pyramid is?
A
90 percent
B
50 percent
C
25 percent
D
10 percent
6) Which is a pyramid model used to show energy flow?
A
a pyramid of numbers
B
a pyramid of energy
C
a pyramid of biomass
D
all answers are correct
7) Organisms that produce their own food are called-
A
detritivores
B
heterotrophs
C
autotrophs
D
omnivores
8) An organism that obtains energy by consuming other organisms are called-
A
autotrophs
B
composers
C
decomposers
D
heterotrophs
9) Wolves and lions are examples of-
A
omnivore
B
a carnivore
C
detritivore
D
herbivore
10) Bears, humans, and mockingbirds are examples of-
A
an herbivore
B
a detritivore
C
an omnivore
D
a carnivore
*select an answer for all questions
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