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WorksheetsDichotomous Key
Total questions: 15
Worksheet time: 47mins
Name
Class
Date
1.
The first part of a scientific name is an organism's _______________ and the second part is its ________________.
a)
species, genus
b)
phylum, order
c)
class, spices
d)
genus, species
2.
What step do we always start with when using dichotomous keys?
a)
1
b)
2
c)
3
d)
4
3.
A dichotomous key for trees is provided. Hikers found a tree that has large brown cones and single sharp needles. What species of tree have the hikers found?
a)
Juniper
b)
Pine
c)
Spruce
d)
Fir
4.
What is the purpose of a dichotomous key?
a)
to find a common ancestor
b)
to show the evolution of organisms
c)
to show relationships between organisms
d)
to identify organisms
5.
When using a dichotomous key to identify organisms, what do we look at?
a)
characteristics
b)
weather patterns
c)
environment
d)
diet
6.
A dichotomous key for insects is given. To what order does an insect with two pairs of scaly wings belong?
a)
Coleoptera
b)
Heteroptera
c)
Diptera
d)
Lepidoptera
7.
The first part of a scientific name is an organism's _______________ and the second part is its ________________.
a)
species, genus
b)
phylum, order
c)
class, spices
d)
genus, species
8.
What is the scientific name of housefly?
a)
Musca domestica
b)
Insect domestica
c)
Animalia domestica
d)
Diptera domestica
9.
What is the genus: Castor canadensis?
a)
Castor canadensis
b)
Castor
c)
canadensis
10.
The word "dichotomous" means...
a)
divided into two parts
b)
not living
c)
two cots for me to sleep on
11.
Using this dichotomous key, identify the name of the circled Fish, J.
a)
peacock flounder
b)
band-tail puffer
c)
trumpet fish
d)
spotted goat fish
12.
Which shark is the picture of?
a)
Cow Shark
b)
Great White Shark
c)
Hammerhead Shark
d)
Saw Shark
13.
Use the dichotomous key to identify this white wildflower
a)
Starflower
b)
Chickweed
c)
Common Strawberry
d)
Bowman's root
14.
What should you do when typing a scientific name?
a)
Capitalize the first word
b)
Capitalize the first word and underline the whole thing
c)
Capitalize the first word and italicize the whole thing
d)
Nothing
15.
Tool used by a taxonomist to identify an unknown organism is a:
a)
dichotomous key
b)
binomial nmenclature
c)
scientific name
d)
binomial key
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