Domain - Images

advertisement

Classification & Taxonomy

What does it mean to classify?

• Classification is when you put objects or things into groups, based on their traits/characteristics, in order to make them easier to find and understand.

Why do we group things?

What are some other examples of classification you can think of?

Biology reasons to classify:

• 1.8 million named species in the world today

• Grouping living organisms means we can learn more about them as a group

• So that we can talk about the same living thing with other people and scientists.

Ex. Cougar / Mountain Lion

On the next slide I want you to find all of the plants

How could we have made that task easier?

Now find all of the plants on the next slide.

Activity

Using a pair of scissors and the handout sheet, I want you to:

Divide up the organisms into 4-6 groups. Based on some logic.

On your left hand page record your grouping criteria.

Switch notebooks with another pair and categorize your pictures based on their criteria.

Taxonomy and Taxons

• Taxonomy is basically the science of putting living things into groups.

Taxons are the groups we put them into

All Living things.

In order to help us understand all 1.8 million organisms scientists divided them up, based on similarities, into 3 gigantic groups.

• Domain – This is the absolute largest division of living things. All living things can be put into 1 of the 3 Domains.

3 Domains

1. Eukarya

– This is the domain for all living things with eukaryotic cells, such as animals, including humans, plants, fungi and protists.

3 Domains

2. Archaea

– This domain contains the extreme bacteria. These are bacteria that can live in boiling water, or acid lakes. Some even live in your intestines

(but not many).

3 Domains

3. Bacteria

– This domain contains all of the rest of the bacteria, like

E. coli

,

Strep

,

Staph

, etc.

Inside the 3 Domains

• Inside each of the Domains there are 1 to 4

Kingdoms.

Domain

• For Example:

Eukarya

Kingdoms

Animalia Plantae

Fungi

Protista

Inside each of the kingdoms there are further subdivisions and so on until you get to a single species.

The Taxons and Taxonomy

Domain

There is only one kind of thing at this taxon.

Kingdoms

Phylum

Class

Order

Family

Genus

Species

Activity

• Copy the information from page 459 onto your domains and kingdoms chart.

• Cut out the chart and glue it into your notebook.

Classification

• What is classification?

It is when you put things into groups based on certain characteristics.

Understanding Check: Taxonomy

• What is the largest taxon?

Domain

• What is the smallest taxon?

Species

Understanding Check: Taxonomy

• How many types of organisms can be found in the taxon species?

One

Understanding check: Kingdoms

Understanding check: Kingdoms

The Eight Taxons

Domain -----------------------------------------------

Largest

Kingdom

Phylum

Class

Order

Family

Genus

Species -------

Smallest

Remembering the Eight taxons

• “Dear King Phillip Called Out For Good

S

oup”

• Domain

• Kingdom

• Phylum

• Class

• Order

• Family

• Genus

• Species

Practice

• What are the taxons from largest to smallest?

• Domain

• Kingdom

• Phylum

• Class

• Order

• Family

• Genus

• Species

Binomial Nomenclature

• Binomial = “Two Name”

• Nomenclature = “Naming System”

• Uses Genus and Species

Examples:

Homo sapiens

Felis concolor

= Humans

= Mountain Lion

Binomial Nomenclature Cont’

Ursus arctos =

Grizzly Bear

Ursus -

sort of like its last name

arctos - sort of like its first name

• Which of the following organisms are most closely related?

Picea abies

Pinus sylvestris

Picea glauca

Thuja plicata

• Which of the following organisms are most closely related?

Rana temporaria

Codium fragile

Bryopsis plumosa

Rana malculosa

Cladogram

• A cladogram shows how closely related several species are.

• For Example - See .pdf of page 452

Example: Which two are most closely

Related?

Frog

Turtle Rabbit Cow

Root

Branching

Point

Assignment

• Work with the person next to you and try to make a cladogram using the information and instructions on page 453

(Quick Lab)

Use a separate piece of paper and turn it in when finished.

Download