Life Science

Chapter 12: Introduction to Animals

Use Percentages

1.
In a forest ecosystem, about one percent of the 400 different animal species are tapeworms. How many tapeworm species are in this ecosystem?
A)4 tapeworm species
B)3 tapeworm species
C)2 tapeworm species
D)6 tapeworm species
2.
In a forest ecosystem, about 0.5 percent of the 400 different animal species are planarians. How many planiarian species are in this ecosystem?
A)8 planarian species
B)4 planarian species
C)2 planarian species
D)5 planarian species
3.
In a forest ecosystem, about 24 percent of the 400 different animal species are reptiles. How many reptile species are in this ecosystem?
A)115 reptile species
B)96 reptile species
C)88 reptile species
D)56 reptile species
4.
In a forest ecosystem, about 12 percent of the 400 different animal species are birds. How many bird species are in this ecosystem?
A)24 bird species
B)56 bird species
C)60 bird species
D)48 bird species
5.
In a forest ecosystem, about eight percent of the 400 different animal species are tree-dwellers. How many tree-dweller species are in this ecosystem?
A)32 tree-dwelling species
B)18 tree-dwelling species
C)42 tree-dwelling species
D)50 tree-dwelling species
6.
There are 400 animal species in a forest ecosystem. If there are 20 flatworm and roundworm species present, what percent of the animal species are flatworms and roundworms?
A)8%
B)5%
C)10%
D)2%
7.
There are 400 animal species in a forest ecosystem. If there are 82 reptile species present, what percent of the animal species are reptiles?
A)27.5%
B)25%
C)20.5%
D)30%
8.
There are 400 animal species in a forest ecosystem. If there are 130 insect species present, what percent of the animal species are insects?
A)32.5%
B)40%
C)36.8%
D)42%
9.
There are 400 animal species in a forest ecosystem. If there are 18 flightless bird species present, what percent of the animal species are flightless birds?
A)2.4%
B)6%
C)8.8%
D)4.5%
10.
There are 400 animal species in a forest ecosystem. If there are 340 herbavore species present, what percent of the animal species are herbavores?
A)55%
B)76%
C)90%
D)85%
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