Kingdoms and Domains Section 18–3 This section describes the six kingdoms of life as they are now identified. It also describes the three-domain system

Kingdoms and Domains Kingdoms and Domains

Section 18–3Section 18–3 This section describes the six kingdoms This section describes the six kingdoms

of life as they are now identified. It also of life as they are now identified. It also describes the three-domain system of describes the three-domain system of classification. classification.

The Tree of Life Evolves The Tree of Life Evolves

Is the following sentence true or false?Is the following sentence true or false?

The scientific view of life was more The scientific view of life was more complex in Linnaeus’s time. complex in Linnaeus’s time.

FalseFalse

The Tree of Life EvolvesThe Tree of Life Evolves

What fundamental traits did Linnaeus What fundamental traits did Linnaeus use to separate plants from animals? use to separate plants from animals?

Animals were mobile organisms that Animals were mobile organisms that used food for energy. Plants were used food for energy. Plants were green, photosynthetic organisms that green, photosynthetic organisms that used energy from the sun. used energy from the sun.


What type of organisms were later What type of organisms were later placed in the kingdom Protista? placed in the kingdom Protista?

Microorganisms were later placed in Microorganisms were later placed in this kingdom.this kingdom.


Mushrooms, yeast, and molds have Mushrooms, yeast, and molds have been placed in their own kingdom, been placed in their own kingdom, which is called____which is called____ . .

FungiFungi


Why did scientists place bacteria in Why did scientists place bacteria in their own kingdom, the Monera?their own kingdom, the Monera?

Bacteria lack the nuclei, Bacteria lack the nuclei, mitochondria, and chloroplasts found mitochondria, and chloroplasts found in other forms of life. in other forms of life.


List the two groups into which the List the two groups into which the Monera have been separated. Monera have been separated.

EubacteriaEubacteria

Archaebacteria Archaebacteria

Complete the concept map.Complete the concept map.

The Three-Domain The Three-Domain System System

A more inclusive category than any A more inclusive category than any other, including the kingdom, is the other, including the kingdom, is the _____._____.

domain domain

The Three-Domain The Three-Domain SystemSystem

What type of analyses have What type of analyses have scientists used to group modern scientists used to group modern organisms into domains?organisms into domains?

They have used molecular analyses. They have used molecular analyses.

Domain BacteriaDomain Bacteria

List the three domains. List the three domains. BacteriaBacteria ArchaeaArchaea EukaryaEukarya

Complete the chart below. Complete the chart below. CLASSIFICATION OF LIVING THINGS CLASSIFICATION OF LIVING THINGS Domain Kingdom Examples

Bacteria Eubacteria Streptococcus, Escherichia coli

Archaea Archaebacteria Methanogens, halophiles

Eukarya Protist

Amoeba, paramecium, slime molds, giant kelp

Fungi Mushrooms, yeasts

Plantae Mosses, ferns, flowering plants

Animalia Sponges, worms, insects, fishes, mammals


Circle the letter of each sentence Circle the letter of each sentence that is true about members of the that is true about members of the domain Bacteria. domain Bacteria.

They are prokaryotes.They are prokaryotes. They have rigid cell walls.They have rigid cell walls. The cell walls contain The cell walls contain

peptidoglycans. peptidoglycans.


Is the following sentence true or Is the following sentence true or false? All members of the domain false? All members of the domain Bacteria are parasites. Bacteria are parasites.

FALSE FALSE

Domain Archaea Domain Archaea

Circle the letter of each sentence that Circle the letter of each sentence that is true about members of the domain is true about members of the domain Archaea. Archaea.

They are unicellular. They are unicellular.

Domain ArchaeaDomain Archaea

Is the following sentence true or Is the following sentence true or false? Many members of the domain false? Many members of the domain Archaea can survive only in the Archaea can survive only in the absence of oxygen. absence of oxygen.

true true

Domain Eukarya Domain Eukarya

Circle the letter of each sentence Circle the letter of each sentence that is true about all the members of that is true about all the members of the domain Eukarya. the domain Eukarya.

They have a nucleus. They have a nucleus.

Domain EukaryaDomain Eukarya

Documents

Kingdoms and Domains Section 18–3 This section describes the six kingdoms of life as they are now identified. It also describes the three-domain system