Bell Work
Objective:
 0807.5.1
Use a simple classification key to identify
an unknown organism.
Classification Activity
1.
2.
3.
4.
5.
At your lab table there are several pictures of animals.
Remove all pictures from the folder.
With your lab group, categorize these pictures
according to their characteristics.
Your team must make at least three groups (or more).
Lay the pictures in three separate groups on your lab
table.
Keep the name of each group a secret because when
we share our groups, we will allow the other groups to
guess how you categorized the pictures.
Don’t tell your category names when you show the
picture, wait until the other groups guess.
Classification means
organizing living things into
groups based on their
similarities.
Scientists classify living and
extinct organisms to make
them easier to study.
Organisms are classified by
shared characteristics and
their relationships between
one another.
The levels of classification
go from very general to
very specific.
Pneumonic device
The 8 levels:
Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
Did
King
Philip
Come
Over
From
Great
Spain
The science of classifying
organisms is called
taxonomy.
Taxonomy was founded by
Linnaeus in the 1700’s.
He classified things only by their
shared characteristics.
Modern taxonomists also
look at evolutionary
relationships between
animals.
A branching diagram can
show the relationships
between organisms.
Group Activity using the Branching
Diagram
1. Construct a Branching diagram
2. Use a frog, a snake, a kangaroo,
and a rabbit in your diagram.
3. Think of one major change before
the frog appeared.
4. For the last 3 organisms, think of
a change that happened between one of these and
the other 2. Write all of these in your diagram.
rabbit
kangaroo
snake
Young develop fully inside
mother
frog
Fur; live birth
Lay eggs on dry land; dry skin
Air breathing; ability
to live on land
Organisms that are more
closely related are closer
together on the branching
diagram.
When living things are
classified, they get a scientific
name.
The scientific name is the same
anywhere in the world.
The 4 Rules to
writing a Scientific
Name:
1. Scientific names are
usually Latin or Greek.
2. The scientific name is
always the genus and
species name together.
3. The Genus is always
written first and capitalized.
The species is second and is
always lower case.
4. The scientific name is
always italicized
or underlined.
Ex. Felis domesticus
Scientists can use a
dichotomous key to
identify unknown
organisms.
Pg. 52
Bacteria are prokaryotic,
meaning they do not have
nuclei.
All other living things are
eukaryotic and have nuclei.
Scientists use 3 Domains.
Archaea
Bacteria
Eukarya
Prokaryotes
Eukaryotes
Scientists use 6 kingdoms.
Archaebacteria
Eubacteria
Protista
Plantae
Fungi
Animalia
Domain Archaea
Kingdom Archaebacteria live in extreme environments (very
hot or cold)
They have been on the earth for about
3 billion years.
Domain Bacteria
Most bacteria are in Kingdom
Eubacteria.
They live in many places all over the
earth and even inside other
organisms.
Domain Eukarya
Kingdom Protista -consists of
unicellular & simple
multicellular organisms.
Protista includes
organisms that are not
plants, animals or fungi
Domain Eukarya
Kingdom Plantae - Plants are
usually green & make food by
photosynthesis
They are complex, multicellular
organisms
Domain Eukarya
Kingdom Fungi- absorb food from their
surroundings.
Fungi are usually multicellular
(except yeast).
Domain Eukarya
Kingdom Animalia
Most move around and have nervous
systems. Animals are complex &
multicellular.
Five Kingdom Classification
Monera
Kingdom
Protist
Kingdom
Fungi
Kingdom
Plant
Kingdom
Animal
Kingdom
Major
Traits
Singlecelled; no
nucleus
Most are
single-celled
Some make
own food;
some cannot
make own
food
Most are
manycelled;
cannot
make own
food
Single-celled and
many-celled;
make own food;
cannot move
from place to
place
Many-celled;
cannot make own
food; can move
from place to
place
Examples
Bacteria
Paramecium
amoeba
euglena
Mushroom
mold, yeast
Tree, small
flowering plant,
fern, algae
Sponge, insect,
clam, fish, bird,
snake, human