St. Leo the Great School
Life Science
Classification of Living Things
Chapter 9
Unit Essential Question
How are living things classified?
Lesson One
Essential Question
Why and how
organisms are
classified?
Lesson One Terms
Classification
Taxonomy
Dichotomous Key
Lesson One
Sorting it all out
Why Classify?
• Answering Questions The classification of living things makes it easier for
biologist to answer many important questions such as:
Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
How do Scientists Classify Organisms?
•
_____________
Classification Today
use the eight-level system to
classify living things based on shared characteristics.
_____________
Branching Diagrams On a
diagram, several characteristics
are listed along the line that points to the right. Each characteristic is shared by the
animals to the right of it.
Levels of Classification
• Kingdoms and Beyond The eight levels of classification are:
Name the seven
levels of
classification.
Lesson One
Evaluation
Explain why and how
organisms are
classified.
List the eight levels
of classification.
Explain scientific
names.
Describe how
dichotomous keys
help in identifying
organisms.
Page 1
_____________ are there?
2. What are the defining characteristics of each _____________?
3. What are the _____________ between these species?
1. How many known
1. _____________
2. _____________
3. _____________
4. _____________
5. _____________
6. _____________
7. _____________
8. _____________
Scientific Names
• One Species, One Name A scientific name is always the same for a specific kind
of organism no matter how many common names there might be.
Two-Part Names The first part of a species’ name is the
_____________name. It is always capitalized. The second part of the name is
the _____________name.
Life Science Mr. Swope
St. Leo the Great School
Life Science
Classification of Living Things
Chapter 9
Unit Essential Question
How are living things classified?
Dichotomous Keys
•
_____________
What Is a Dichotomous Key? A
key is a tool for
identifying organisms that uses a series of paired descriptive statements.
_____________
Two-Part Names By working through the statements in a
key
in order, a person can eventually identify an unknown organism.
A Growing System
• Still Discoveries to Make People are still discovering and classifying organisms.
_____________are found that
are so different from other known organisms that new _____________,
Discovery Unique Organisms Sometimes new
phyla, and so on must be formed.
End of Lesson One
Lesson Two Essential
Questions
Explain how
classification
developed as greater
numbers of
organisms became
known.
Describe the three
domains.
Describe four
kingdoms in the
domain Eukarya
Lesson Two Terms:
Archaea
Bacteria
Eukarya
Protista
Fungi
Plantae
Animalia
Page 2
Lesson Two
Domains and Kingdoms
What Is It?
• What Is Used to Classify Organisms? Organisms are classified by their
_____________.
Adding New Classification Categories As scientists continue to learn about living
things, they add classification categories that account for the
_____________of different organisms.
The Two Kingdoms of Bacteria
•
_____________are one of two kinds of
prokaryotes. _____________are single-celled organisms that do not
The Domain Archaea
have a nucleus. Most are known to live in extreme environments.
_____________
The Domain Bacteria
are another kind of prokaryote.
Bacteria can be found in soil, water, and even on and inside the human body.
Life Science Mr. Swope
St. Leo the Great School
Life Science
Classification of Living Things
Chapter 9
Unit Essential Question
How are living things classified?
_____________
The Domain
• The Kingdom Protista Today members of the kingdom
_____________commonly called protists, are single-celled or simple
Lesson Two
Evaluation
Explain how
classification
developed as greater
numbers of
organisms became
known.
Describe the three
domains.
Describe four
kingdoms in the
domain Eukarya
multicelluar organisms.
Protista contains many kinds of organisms, including protozoans, algae, and
euglenoids.
•
_____________and
_____________are examples of the complex, multicelluar members
The Kingdom Fungi
of the kingdom Fungi.
Fungi do not perform photosynthesis or eat food. Instead, fungi absorb nutrients from
substances in their surroundings.
_____________
Plants The kingdom _____________consists of organisms that are
_____________, have cell walls, and make food through
The Kingdom
•
photosynthesis.
Examples of Plantae Sequoia trees, roses, grasses, ferns, and more are all examples of
members of the kingdom
The Kingdom Animalia
•
_____________.
_____________
Animals The kingdom
contains complex,
multicellular organisms that don’t have cell walls, are usually able to move
around, and have specialized sense organs.
•
_____________
Examples of
Ants, beetles, lizards, fish, birds, apes,
elephants, and more are all examples of members of the kingdom Animalia.
Simple Animals Most animals are able to move, but sponges, a simple animal, cannot
move.
End of Lesson Two
Use the terms below to complete the concept map on the next slide.
End of Chapter 9
Page 3
Life Science Mr. Swope
St. Leo the Great School
Life Science
Classification of Living Things
Chapter 9
Unit Essential Question
How are living things classified?
Lesson One
Essential Question
Why and how
organisms are
classified?
Lesson One Terms
Classification
Taxonomy
Dichotomous Key
1. How many known
species are there?
2. What are the defining characteristics of each
species?
relationships between these species?
3. What are the
How do Scientists Classify Organisms?
Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
•
Taxonomists
Classification Today
use the eight-level system to classify
living things based on shared characteristics.
branching
Branching Diagrams On a
diagram, several characteristics are listed
along the line that points to the right. Each characteristic is shared by the animals to
the right of it.
Levels of Classification
• Kingdoms and Beyond The eight levels of classification are:
Name the seven
levels of
classification.
Lesson One
Evaluation
Explain why and how
organisms are
classified.
List the eight levels
of classification.
Explain scientific
names.
Describe how
dichotomous keys
help in identifying
Page 4
Lesson One
Sorting it all out
Why Classify?
• Answering Questions The classification of living things makes it easier for
biologist to answer many important questions such as:
1. Domain
2. Kingdom
3. Phylum
4. Class
5. Order
6. Family
7. Genus
8. Species
Scientific Names
• One Species, One Name A scientific name is always the same for a specific kind
of organism no matter how many common names there might be.
Two-Part Names The first part of a species’ name is the
capitalized. The second part of the name is the
Life Science Mr. Swope
genus name. It is always
species name.
St. Leo the Great School
Life Science
Classification of Living Things
Chapter 9
Unit Essential Question
How are living things classified?
organisms.
Dichotomous Keys
•
dichotomous
What Is a Dichotomous Key? A
key is a tool for
identifying organisms that uses a series of paired descriptive statements.
dichotomous
Two-Part Names By working through the statements in a
key
in order, a person can eventually identify an unknown organism.
A Growing System
• Still Discoveries to Make People are still discovering and classifying organisms.
Discovery Unique Organisms Sometimes new
organisms are found that are so
different from other known organisms that new
formed.
classes, phyla, and so on must be
End of Lesson One
Lesson Two Essential
Questions
Explain how
classification
developed as greater
numbers of
organisms became
known.
Describe the three
domains.
Describe four
kingdoms in the
domain Eukarya
Lesson Two Terms:
Archaea
Bacteria
Eukarya
Protista
Fungi
Plantae
Animalia
Page 5
Lesson Two
Domains and Kingdoms
What Is It?
• What Is Used to Classify Organisms? Organisms are classified by their
characteristics.
Adding New Classification Categories As scientists continue to learn about living
things, they add classification categories that account for the
of different organisms.
The Two Kingdoms of Bacteria
•
The Domain Archaea
characteristics
Archaea are one of two kinds of prokaryotes.
Prokaryotes are single-celled organisms that do not have a nucleus.
Most are known to live in extreme environments.
Bacteria
The Domain Bacteria
are another kind of prokaryote. Bacteria can be
found in soil, water, and even on and inside the human body.
The Domain
Eukarya
•
Protista
The Kingdom Protista Today members of the kingdom
commonly called protists, are single-celled or simple multicelluar organisms.
Protista contains many kinds of organisms, including protozoans, algae, and
euglenoids.
Life Science Mr. Swope
St. Leo the Great School
Life Science
Classification of Living Things
Chapter 9
Unit Essential Question
How are living things classified?
Molds
•
mushrooms
The Kingdom Fungi
and
are examples of the
complex, multicelluar members of the kingdom Fungi.
Fungi do not perform photosynthesis or eat food. Instead, fungi absorb nutrients from
substances in their surroundings.
The Kingdom
Lesson Two
Evaluation
Explain how
classification
developed as greater
numbers of
organisms became
known.
Describe the three
domains.
Describe four
kingdoms in the
domain Eukarya
•
Plantae
Plants The kingdom
Plantae consists of organisms that are
eukaryotic, have cell walls, and make food through photosynthesis.
Examples of Plantae Sequoia trees, roses, grasses, ferns, and more are all examples of
members of the kingdom
The Kingdom Animalia
Plantae.
Animalia
•
Animals The kingdom
contains complex, multicellular
organisms that don’t have cell walls, are usually able to move around, and
have specialized sense organs.
•
Examples of
Animalia Ants, beetles, lizards, fish, birds, apes,
elephants, and more are all examples of members of the kingdom Animalia.
Simple Animals Most animals are able to move, but sponges, a simple animal, cannot
move.
End of Lesson Two
Use the terms below to complete the concept map on the next slide.
End of Chapter 9
Page 6
Life Science Mr. Swope
St. Leo the Great School
Life Science
Classification of Living Things
Chapter 9
Unit Essential Question
How are living things classified?
Classification
Taxonomy
Dichotomous Key
Page 7
Life Science Mr. Swope
St. Leo the Great School
Life Science
Classification of Living Things
Chapter 9
Unit Essential Question
How are living things classified?
Domain
Kingdom
Phylum
Page 8
Life Science Mr. Swope
St. Leo the Great School
Life Science
Classification of Living Things
Chapter 9
Unit Essential Question
How are living things classified?
Class
Order
Family
Page 9
Life Science Mr. Swope
St. Leo the Great School
Life Science
Classification of Living Things
Chapter 9
Unit Essential Question
How are living things classified?
Genus
Species
Archaea
Page Life Science Mr. Swope
10
St. Leo the Great School
Life Science
Classification of Living Things
Chapter 9
Unit Essential Question
How are living things classified?
Bacteria
Eukarya
Protista
Page Life Science Mr. Swope
11
St. Leo the Great School
Life Science
Classification of Living Things
Chapter 9
Unit Essential Question
How are living things classified?
Fungi
Plantae
Animalia
Page Life Science Mr. Swope
12