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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 population level
B
a height increase
C
a grade level
D
a trophic level
3) Where do all levels in a food chain or web, except a the first level, get their energy?
A
from the level before it
B
from within its level
C
from the level after it
D
by producing it
4) Why would an ecologist use a food web instead of a food chain?
A
Webs are more simplified then a chain
B
Webs are easier to construct than a chain.
C
A food chain is too complex for people to understand easily.
D
Food webs give a more accurate picture of how energy flows in an ecosystem.
5) The amount of energy used by the organisms at each level in an ecological pyramid is?
A
10 percent
B
50 percent
C
90 percent
D
25 percent
6) Which is a pyramid model used to show energy flow?
A
a pyramid of numbers
B
a pyramid of biomass
C
a pyramid of energy
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
heterotrophs
C
composers
D
decomposers
9) Wolves and lions are examples of-
A
detritivore
B
omnivore
C
herbivore
D
a carnivore
10) Bears, humans, and mockingbirds are examples of-
A
a detritivore
B
a carnivore
C
an omnivore
D
an herbivore
*select an answer for all questions
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