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WorksheetsDichotomous Keys
Total questions: 26
Worksheet time: 38mins
Name
Class
Date
1.
What is the purpose of a dichotomous key?
a)
to find a common ancestor
b)
to show the evolution of organisms
c)
to see what organisms eat
d)
to identify organisms
2.
Take your time and read carefully! Timer is 3 minutes!
---------
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 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
3.
The 8 levels of classification, most broad to most specific. (From largest to smallest)
a)
Domain, Genus, Family, Order, Class, Phylum, Kingdom, Species
b)
Species, Kingdom, Domain, Genus, Phylum, Family, Class, Order
c)
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
d)
Order, Kingdom, Domain, Species, Phylum, Family, Class, Genus
4.
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
5.
When using a dichotomous key to identify organisms, what do we look at?
a)
physical features
b)
weather patterns
c)
environment
d)
diet
6.
Take your time and read carefully! Timer is 3 minutes!
---------
An illustration and a dichotomous key are given. What is the correct classification for this organism?
---------
An illustration and a dichotomous key are given. What is the correct classification for this organism?
a)
Class Insecta
b)
Order Amblygygi
c)
Order Araneae
d)
Order Scorpiones
7.
Take your time and read carefully! Timer is 3 minutes!
---------
A dichotomous key for insects is given. To what order does an insect with two pairs of scaly wings belong?
---------
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
8.
Take your time and read carefully! Timer is 3 minutes!
---------
A student discovers an arachnid with a segmented abdomen, long legs, and a tail with no stinger. The student uses the dichotomous key below to identify it. Which arachnid has the student found?
---------
A student discovers an arachnid with a segmented abdomen, long legs, and a tail with no stinger. The student uses the dichotomous key below to identify it. Which arachnid has the student found?
a)
Whip Scorpion
b)
Wind Scorpion
c)
Tick
d)
Scorpion
9.
What step do we always start with when using dichotomous keys?
a)
Step 1
b)
Step 2
c)
Step 3
d)
Step 4
10.
Tool used by a taxonomist to identify an unknown organism is a:
a)
dichotomous key
b)
binomial nomenclature
c)
scientific name
d)
binomial key
11.
Which of the following organisms are LEAST closely related?
a)
organisms that share a domain
b)
organisms that share a family
c)
organisms that share a genus
d)
organisms that share a species
12.
What is a dichotomous key used for in science?
a)
To organize biomes
b)
Classify organisms
c)
Identify bacteria only
d)
None of these
13.
How many kingdoms are there?
a)
2
b)
3
c)
6
d)
8
14.
In what kingdom would you find trees and flowers?
a)
Plantae
b)
Fungi
c)
Eubacteria
d)
Animalia
15.
You would find mushrooms in what kingdom?
a)
Plantae
b)
Protists
c)
Fungi
d)
Animalia
16.
What is written in italics or underlined.
a)
Scientific Name
b)
Common Name
17.
Who is the founder of modern taxonomy?
a)
Carolus Linnaeus
b)
Gregor Mendel
c)
Charles Darwin
d)
Rosalind Franklin
18.
When writing the scientific name of an organism you capitalize the first letter of the Genus.
a)
True
b)
False
19.
When writing the scientific name you capitalize the second word that represents the Species.
a)
True
b)
False
20.
What does the phrase
---------
Did King Philip Come Over For Good Spaghetti
---------
help you remember
---------
Did King Philip Come Over For Good Spaghetti
---------
help you remember
a)
8 Levels of Classification
b)
Metric System
c)
Colors of the Rainbow
d)
Planet Names
21.
What are the three domains?
a)
Archaea, Bacteria, Eukarya
b)
Eubacteria, Archaea, Eukarya
c)
Archaeabacteria, Bacteria, Eukarya
22.
Which is NOT a characteristic of the domain Archaea?
a)
They are prokaryotes
b)
They live in extreme environments
c)
They have chemically different cell walls
d)
They are the simplest form of life
23.
Which is NOT a characteristic of the domain Bacteria
a)
They live everywhere
b)
There are good bacteria
c)
They are Prokaryotic
d)
They live extreme environments
24.
Which is NOT a characteristic of the domain Eukarya?
a)
They are multi-cellular with complex
b)
They are single complex cells
c)
They are Eukaryotic
d)
They are known as the simplest form of life
25.
Common names given to organisms are misleading (confusing)...
a)
True
b)
False
26.
What happens when scientists discover new information about classifications?
a)
As scientists learn more they update their classification system.
b)
Not this one!
c)
Definitely not this one!!!
d)
This one is EXTREMELY wrong!!!!!!!
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