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Dicotomous key

Total questions: 20

Worksheet time: 13mins

Name
Class
Date
1.

What is monster # 1 ?

a)

Alienus quadlegicus

b)

Alienus haircus

c)

Alienus Tritoothicus

d)

Alienus Blobicus

2.

What is monster # 3 ?

a)

Alienus Fuzzicus

b)

Alienus Stripicus

c)

Alienus Tritoothicus

d)

Alienus Blobicus

3.

What is monster # 4 ?

a)

Alienus Fuzzicus

b)

Alienus Stripicus

c)

Alienus Quadlegicus

d)

Alienus Blobicus

4.

What is monster # 2 ?

a)

Alienus Fuzzicus

b)

Alienus Stripicus

c)

Alienus Tritoothicus

d)

Alienus Blobicus

5.

What is monster # 5 ?

a)

Alienus Fuzzicus

b)

Alienus Tritoothicus

c)

Alienus Hairicus

d)

Alienus Blobicus

6.

What is monster # 6 ?

a)

Alienus Stripicus

b)

Alienus Tritoothicus

c)

Alienus Hairicus

d)

Alienus Quadlegicus

7.
What is the name of bird W?
a)
Certhidea
b)
Geospiza
c)
Camarhynchus
d)
Platyspiza
8.
What is the name of bird Z?
a)
Certhidea
b)
Geospiza
c)
Camarhynchus
d)
Platyspiza
9.
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
10.
Using this dichotomous key, identity the name of the circled fish.
a)
band-tail puffer
b)
spotted goat fish
c)
peacock flounder
d)
trumpet fish
11.
When using a dichotomous key to identify organisms, what do we look at?
a)
physical features
b)
weather patterns
c)
environment
d)
diet
12.
What step do we always start with when using dichotomous keys?
a)
1
b)
2
c)
3
d)
4
13.

Identify the plant shown

a)

A

b)

B

c)

C

d)

D

14.

What class of vertebrates does organism T belong to?

a)

Amphibians

b)

Birds

c)

Fish

d)

Mammals

15.
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
16.
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
17.

Which leaf is shown in the drawing?

a)

Magnolia

b)

Redbud

c)

Sweetgum

d)

None of the above

18.

Is the right answer for classifying this organism chosen on this dichotomous key?

a)

Yes

b)

No

19.

Look at the dichotomous key below. What are the characteristics of salamander?

a)

Can fly

b)

cannot fly

c)

scales

d)

no fur

20.

Look at the dichotomous key below. What are the characteristics of fish?

a)

Can fly

b)

cannot fly

c)

scales

d)

fins