Download - Grade 7 - Dichotomous Keys
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awan
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Dichotomous key is:
a tool that allows the user to determine the identity of items in the natural world
"Dichotomous" means "divided into two parts".
Therefore, dichotomous keys always give two choices in each step.
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A, B, C
ANIMALS
Has blue colored body
Has dark blue colored body
Has 4 legs
Has 8 legs
A, B C
Has a
tail
Doesn’t have a tail
B A
Has ears Doesn’t have ears
D, F E
D, E, F
Has a pointy hump
Doesn’t have a pointy hump
F D
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A, B, C
ANIMALS
Has blue colored body
Has dark blue colored body
Has 4 legs
Has 8 legs
A, B C
Has a
tail
Doesn’t have a tail
B A
Has ears Doesn’t have ears
D, F E
D, E, F
Has a pointy hump
Doesn’t have a pointy hump
F D
11
22
33
44
55
bbaa
bbaa bbaa
bbaa bbaa
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Please make a dichotomous keyThe object is your friends
Submit your HW next meeting:
3 October 2013