Name: ___________________________Period: _______
Biology Week #8
Week of: October 5-9
Day
10/5:
Monday
Root Words
Word:
Definition:
As in:
Word:
Definition:
10/6:
Tuesday
10/7:
Wednesday
10/8:
Thursday
Word:
Definition:
Picture:
-Practice Dichotomous Keys
-Dichotomous Key Lab
Picture:
-Dichotomous Key Lab
As in:
-
As in:
-
-Kahoot!
-Pink Notes
-Grade Graph
-Goal Setting
-Classification Reading
-Notes on Dichotomous Key
-Practice Dichotomous Keys
As in:
Word:
Definition:
Homework
Picture:
As in:
-
Word:
Definition:
10/9:
Friday
Picture:
In-Class
Picture:
-Finish Packet
-QUIZ #7
Need Help?
Smith
Hill
Lundgren
Caudle
Monday
3rd Exit 6
Tuesday
8th Exit 2
T.C. - AM
221 – PM
rd
Wednesday
118 – PM
3 Exit 6
221 – PM
Thursday
8th Exit 2
T.C. - AM
221 - PM
rd
Friday
3 Exit 6
AM = before school, PM = after school, T.C. = tutoring center
Messer
119/196
119/196
119/196
119/196
119/196
Clark
AM
AM
AM
AM
AM
Website = www.oprfbioe.weebly.com
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117 - PM
Name: ___________________________Period: _______
Classification Keys Intro
Part A Introduction: All cultures have developed names for living things found in their
environments. When various everyday names are used for the same
organism in different cultures, confusion is possible. For example, we
know the Robin here in the United States as a dark gray bird with a
red chest and black head. In England the Robin is known as a light
colored tan bird with a bright orange chest and face. To avoid confusion like this, scientists
have developed an international system for naming and classifying all organisms. This system
often lists organisms by their genus and species name.
1. What is the paragraph above about? _____________________________________
_________________________________________________________________
2. Give an example (besides the robin) of a case where the common name of an organism
might be confusing? __________________________________________________
_________________________________________________________________
3. What does the system use to list organisms’ by? ____________________________
_________________________________________________________________
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Name: ___________________________Period: _______
See the order of classification in the figure on
the right. The Kingdom level is the broadest
while the species is the most specific. For
instance, camels, llamas, giraffes, squirrels,
snakes, and sea stars are all in the Kindgom
Animalia (Latin for animals) while camels are the
only animal in the species bactrianus. Notice
when we list the scientific name for an organism
the name is typed in italics (or underlined if handwritten). Organisms are usually referenced
by their genus and species names making the scientific name for camels Camelus bactrianus or
C. bactrianus. Notice the first letter of the genus is capitalized while the species is not. The
scientific name for humans is Homo sapiens.
4. Which group is the biggest and broadest and contains the most living things?
_________________________________________________________________
5. Which group is the smallest and most specific and contains the least living things?
_________________________________________________________________
6. According to the Figure above, what order is the camel in? _____________________
What other animals are in that order? ____________________________________
7. What is the scientific name for a camel? __________________________________
8. What is the scientific name for humans? __________________________________
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Name: ___________________________Period: _______
Identification guides, called keys, have been developed to help people identify organisms by
scientific name according to the organisms’ characteristics. Keys also help in the classification
of organisms and their relatedness. For example, the Bengal tiger (common name) has the
Scientific name Panthera tigris tigris. This tiger is closely related to the Siberian tiger whose
scientific name is Panthera tigris altaica. Note the Scientific names’ similarity hinting the
animals close relatedness.
9. What is the above paragraph about? _____________________________________
_________________________________________________________________
10. What is the difference in the scientific names of the two tigers? ________________
_________________________________________________________________
Classification keys are usually dichotomous in arrangement. The word dichotomous means “two
opposite parts or categories.” A dichotomous key gives the reader a list of opposing
descriptions on the basic traits of an organism. The reader studies the living thing and selects
the descriptions that apply to it until reaching a statement that fits for only one species and
names it by genus and species. This is the same thing we did with the living organisms in class
last week.
11. How many options are given in a dichotomous key? ___________________________
_________________________________________________________________
12. How does a dichotomous key work? ______________________________________
_________________________________________________________________
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Name: ___________________________Period: _______
Figure 2 Dichotomous Key by common name
13. According to the dichotomous key above (leaves), how many options are there
for each step? ________________________________________________
14. Looking at the dichotomous key above, what is one question you have about the
key or how to use the key? _______________________________________
____________________________________________________________
____________________________________________________________
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Name: ___________________________Period: _______
Dichotomous Key Notes
Problem: Why are dichotomous keys important to biologists?
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
-
What is a dichotomous key?
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Name: ___________________________Period: _______
Problem: Why are dichotomous keys important to biologists?
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
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Name: ___________________________Period: _______
Dichotomous Keys Using Smiley Faces
Use the dichotomous key to identify the scientific name of the smiley faces
below.
1.
2.
3.
4.
5.
6.
7.
8.
1. Teeth visible ....................go to 2
Teeth not visible .................go to 4
2. Has a wide, toothy smile .......Smilus toothyus
Is not smiling ......................go to 3
3. Visibly crying .................Smilus dramaticus
Frowning .......................Smilus upsettus
4. Eyes are symmetrical .... go to 5
Eyes not symmetrical .....go to 8
5. Eyes shaped like hearts ..... Smilus loveus
Eyes are shaped as ovals .....go to 6
6. Smiling, happy face ...... Smilus traditionalis
Not happy, frowning or other .....go to 7
7. Mouth curved down, frowning .... Smilus saddus
Mouth is a small circle .................Smilus suprisus
8. Has a pirate eye patch ...............Smilus piratus
Does not have eye patch ............ go to 9
9. One eye is much larger than the other eye ..... Smilus mutatus
One eye is winking .................Smilus winkus
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Name: ___________________________Period: _______
1. The names of the smilies give you another bit of information about
their taxonomy. Each of these smilies belongs to the same genus.
What is their genus?
_____________________________________________________
2. Names are often given to an organism by the person who discovers it
and often they are named after the person who discovered it, or where
the organism was found, or given a name that describes the creature.
What strategy was used in naming these smilies?
_____________________________________________________
3. Suppose you discovered the new smiley like this one:
What name would you give it? _________________
Why would you give it that name? ______________
________________________________________
________________________________________
4. Create a small dichotomous key that names the following creatures.
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Name: ___________________________Period: _______
Preserved Organisms Dichotomous Key
Look at the organisms on your table and follow the dichotomous key to discover the scientific name.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
Step 1
a. Lives in water = go to step 2
b. Can live on land = go to step 8
Step 2
a. Has a shell = go to step 3
b. Does not have a shell = go to step 4
Step 3
a. Ridge goes in same direction as the opening and is smooth… Margaritifera margaritifera
b. Ridge goes in opposite direction as the opening and is ridged… Argopecten irradians
Step 4
a. Has legs and an exoskeleton… Cherax quadricarinatus
b. Has no legs = go to step 5
Step 5
a. Has fins = go to step 6
b. Has no fins = go to step 7
Step 6
a. Flattened head… Squalus acanthias
b. Pointed head… Morone americana
Step 7
a. Large and dark in color… Holothuria leucospilota
b. Small and light in color… Anemonia sulcata
Step 8
a. Has wings = go to step 9
b. Has no wings = go to step 10
Step 9
a. Has feathers… Passer domesticus
b. Has no feathers and three pairs of legs… Romalea microptera
Step 10
a. Four legs = go to step 11
b. More than four legs = go to step 13
Step 11
a. Has a tail = go to step 12
b. Has no tail… Rana temporaria
Step 12
a. Has a long spotted body… Ichthyosaura alpestris
b. Has a pink nose and no spots… Sus scrofa
Step 13
a. Has more than 10 legs… go to step 14
b. Has less than 10 legs… go to step 15
Step 14
a. Has antenna… Ethmostigmus trigonopodus
b. Has no antenna… Narceus americanus
Step 15
a. Has a tail… Urodacus manicatus
b. Has no tail… Periplaneta americana
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Name: ___________________________Period: _______
Organism Number: _____
Scientific Name: ____________________________________________________
Organism Number: _____
Scientific Name: ____________________________________________________
Organism Number: _____
Scientific Name: ____________________________________________________
Organism Number: _____
Scientific Name: ____________________________________________________
Organism Number: _____
Scientific Name: ____________________________________________________
Organism Number: _____
Scientific Name: ____________________________________________________
Organism Number: _____
Scientific Name: ____________________________________________________
Organism Number: _____
Scientific Name: ____________________________________________________
Organism Number: _____
Scientific Name: ____________________________________________________
Organism Number: _____
Scientific Name: ____________________________________________________
Organism Number: _____
Scientific Name: ____________________________________________________
Organism Number: _____
Scientific Name: ____________________________________________________
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Name: ___________________________Period: _______
Practice with Dichotomous Keys
Use the dichotomous key to identify the scientific name of all of the animals below.
Common Name
Scientific Name
Common Name
8. canary
1. dog
( yellow bird)
2. shark
9. oyster/clam
3. rose
10. mosquito
4. skunk
11. mushroom
5. turkey
12. cow
6. dolphin
13. pine tree
7. eagle
14. poison ivy
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
animal
not an animal
has wings
no wings
has feathers
no feathers
flies high
does not fly high
often yellow
not yellow
lives in water
lives on land
has fluffy fur
no fluffy fur
common pet
not a common pet
has fins
no fins
razor sharp teeth
pegged, pointy teeth
green
not green
grows tall
does not grow tall
can be poisonous
not poisonous
go to 2
go to 11
go to 3
go to 6
go to 4
Ochloerotatus taeniorhynchus
go to 5
Meleagris gallopavo
Serinus canaria
Haliaeetus leucocephalus
go to 9
go to 7
go to 8
Bos taurus
Canis familiaris
Mephitis mephitis
go to 10
Haematopus ostralegus
Carcharodon carcharias
Tursiops truncates
go to 12
go to 13
Pinus ponderosa
Rhus toxicodendron
Boletus edulis
Rosa sylvestris
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Scientific Name
Name: ___________________________Period: _______
B. Answer the following questions using the scientific names from the previous page:
1. Which organisms would you like to sing with? __________________________________
2. Which organisms would you like to eat? ______________________________________
3. Which organisms would you like to play with? __________________________________
4. Which organisms would you stay away from? ___________________________________
5. Which organisms have a pleasant odor? ______________________________________
6. Which organisms have an unpleasant odor? ___________________________________
7. Which organisms do you see during the holidays? _______________________________
8. Which organisms possess valuable fashion items? _______________________________
9. Which organisms are you likely to see on a farm? _______________________________
10. Which organisms are you likely to see at Sea World? ____________________________
11. Which organisms are likely to inflict pain on you? _______________________________
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Name: ___________________________Period: _______
Making Your Own Dichotomous Key
Using the pictures below, create your own dichotomous key at the bottom of the page.
Step 1: A _______________________________________________________________
B _______________________________________________________________
Step 2: A _______________________________________________________________
B _______________________________________________________________
Step 3: A _______________________________________________________________
B _______________________________________________________________
Step 4: A _______________________________________________________________
B _______________________________________________________________
Step 5: A _______________________________________________________________
B _______________________________________________________________
Step 6: A _______________________________________________________________
B _______________________________________________________________
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