Identifying Aliens with a Dichotomous Key
Look carefully at the aliens pictured below. Use the dichotomous key to find the scientific
I name for each one.
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2
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4
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a. Mouth open
b. Mouth not open
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a. Arms
b. No Arms
a. Hairy
b. Not hairy.
a. No legs
b. Legs.
Write your answers below.
a. No horns
b. Horns.
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Graphics by Scrappin Doodles
http://www.scrappindoodles.com/
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.Alienus quadlegicus
Alienus hairicus
Alienus tritoothicus
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.Alienus stripicus
.Alienus blobicus
Alienus fuzzicus
Each of these aliens belongs to the same genus. What is their genus?
Look at the species name for each alien. How do you think these names were chosen?