Classification & Dichotomous KeyGoals:I can list the taxonomic classification levels in order
I can recognize a properly written scientific name
I can use a dichotomous key to classify and name organisms
8 Major Categories of Classification• Species is the most specific
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Domain
6th Grade Review6.12C Recognize that the broadest taxonomic
classification of living organisms is divided into currently recognized Domains
• All living things are classified into taxonomic groups: the largest and broadest umbrella is the domain
• The 3 Domains for the Taxonomic Classification of Living Things are as follows: – Archaea – live in extreme environments, one-celled
critters = unicellular – Bacteria – most are decomposers, some cause
disease (also called Eubacteria) – Eukaryota – protists, fungi, plants & animals
6.12D Identify the basic characteristics of organisms, including prokaryotic or eukaryotic, unicellular or multicellular, autotrophic or heterotrophic, and mode of reproduction that further classify them in the currently recognized Kingdoms
• There are currently 6 kingdoms – organisms are placed into the kingdoms based on the number and type of cells they have, and their nutritional needs.
• The 6 Kingdoms of living things (some are unicellular and/or multicellular) are as follows: Archaebacteria – unicellular, prokaryotic Eubacteria – unicellular, prokaryotic Fungi – unicellular or multicellular (heterotrophic) and eukaryotic Protists – unicellular or multicellular (autotrophic, heterotrophic) and
eukaryotic Plants – multicellular (autotrophic) and eukaryotic Animals – multicellular (heterotrophic) and eukaryotic
• Plant cells are termed autotrophic – plants are producers: make their own food through photosynthesis
• Animal cells are heterotrophic-animals are consumers
6th Grade Review
Taxonomy Classification• Taxonomy – the science of classifying (naming) organisms• Binomial Nomenclature
– developed by Carolus Linnaeus– 2-word naming system (genus and species)
• Examples:– Felis concolor (mountain lion)– Ursus arctos (brown bear)– Homo sapiens (humans)– Panthera leo (lion)– Panthera tigris (tiger)
• Recognize and properly write a scientific name: Homo sapiens, or Homo sapiens, or H. sapiens – 1st word is Capitalized –Genus– 2nd word is lowercase —species– Underline– Italicize– Abbreviate the genus (first name) (P. tigris or P. leo)
Dichotomous Key• Use a dichotomous key to identify or to
distinguish one type of organism or object from another. (2 choices – yes/no for each trait)
• The branches can show who is most closely related to whom.
Shoe Dichotomous Key
1. a. This shoe covers the toes completely……………..…go to 2b. This shoe does NOT cover the toes completely………………..go to 3
1a 1b
Shoe Dichotomous Key1. a. This shoe covers the toes completely……
go to 2b. This shoe does NOT cover the toes completely……go to 3
1a 1b
Shoe Dichotomous Key
2. a. This shoe is black and white……go to 4b. This shoe has color……………….…Shoe dill
2a 2b
Shoe Dichotomous Key
2. a. This shoe is black and white……go to 4b. This shoe has color……………….…Shoe dill
2a 2b
Shoe Dichotomous Key
3. a. This shoe is flat……………Shoe marchb. This shoe is NOT flat……Shoe helvey
3a 3b
Shoe Dichotomous Key3. a. This shoe is flat……………Shoe march
b. This shoe is NOT flat……Shoe helvey
3a 3b
Shoe Dichotomous Key
4. a. This shoe covers the ankle……Shoe Kiserb. This shoe does NOT cover the ankle…Shoe Jones
4a4b
Shoe Dichotomous Key
4. a. This shoe covers the ankle……Shoe Kiserb. This shoe does NOT cover the ankle…Shoe Jones
4a4b
Lady Bug Dichotomous Key
1. a. If the lady bug has feather like antennas….go to 2 b. If the lady bug has knob antennas…..go to 4
2. a. Spotted wings present…… Ladea ashley b. Solid wings present……….. go to 3
3. a. Has six legs…………………………..Ladea kaley b. Has 4 legs…………………………...Ladea jessica
4. a. Solid abdomen present…. Ladea elena b. Stripes on abdomen………go to 5
5. a. Spotted wings……Ladea rachel b. Solid wings……..…Ladea allison
A
B
C
D
E
F
Leaf Dichotomous Key
1. a. If the leaf has many smaller leaves on it, called leaflets…….go to 2 b. If the leaf does NOT have any leaflets…..go to 3
2. a. If the leaflets are rounded…… Robinia pseudoacacia b. If the leaflets are pointed……. Fraxinus pennsylvanica
3. a. If leaf veins are singular…………………………..go to 4 b. If the leaf veins have multiple branches….go to 5
4. a. If the leaf edges are pointed …. Castanea dentata b. If the leaf edges are rounded …Quercus stellata
5. a. If leaf is fat and round…Populus tremuloides b. If the leaf is shaped like a hand …Acer saccharinum
Alien Dichotomous Key
1. a. Alien with antennae………………….go to 2 b. Alien with without hair..…..go to 3
2. a. Alien with mouth……………….Alienus robert b. Alien without mouth…………Alienus george
3. a. Alien with 2 eyes …… Alienus jack b. Alien with 3 eyes……. go to 4
4. a. Alien with splatter chest…. Alienus sam b. Alien without splatter…Alienus bob
A
B
C
D
E
Taxonomic Classification & Scientific Names
1. Come up with your own way to remember the 8 major categories of classification in order. (Explain it.)
2. Explain 3 ways of writing a scientific name for an organism. (Be specific)
3. What is the most diverse taxonomic level?4. What is the most specific taxonomic level?5. Explain which organisms (A-D) are the closest
related? Explain.6. Which organism (A-D) is least like the others? Explain.7. List the current domains of taxonomic classification.8. List the current kingdoms of taxonomic classification.
A B C DKingdom Animalia Animalia Animalia AnimaliaPhylum/Division
Chordata Chordata Chordata Chordata
Class Mammalia Mammalia Mammalia AvesOrder Primate Carnivora Carnivora AnseriformesFamily Homindae Felidae Felidae AnatidaeGenus Homo Panthera Panthera AnasSpecies sapiens leo tigris acuta
Lady Bug Dichotomous Key1. a. If the lady bug has feather like antennas….go to 2 b. If the lady bug has knob antennas…..go to 4
2. a. Spotted wings present…… Ladea ashley F b. Solid wings present……….. go to 3
3. a. Has six legs…………………………..Ladea kaley E b. Has 4 legs…………………………...Ladea jessica C
4. a. Solid abdomen present…. Ladea elena D b. Stripes on abdomen………go to 5
5. a. Spotted wings……Ladea rachel A b. Solid wings……..…Ladea allison B
A
B
C
D
E
F
Leaf Dichotomous Key
1. a. If the leaf has many smaller leaves on it, called leaflets…….go to 2 b. If the leaf does NOT have any leaflets…..go to 32. a. If the leaflets are rounded…… Robinia
pseudoacacia D b. If the leaflets are pointed……. Fraxinus
pennsylvanica C3. a. If leaf veins are singular…………………………..go to 4 b. If the leaf veins have multiple branches….go to 54. a. If the leaf edges are pointed …. Castanea
dentata E b. If the leaf edges are rounded …Quercus stellata A5. a. If leaf is fat and round…Populus tremuloides B b. If the leaf is shaped like a hand …Acer
saccharinum F
Alien Dichotomous Key
1. a. Alien with antennae ………………….go to 2 b. Alien with without hair..…..go to 3
2. a. Alien with mouth……………….Alienus
robert E b. Alien without mouth…………Alienus
george C
3. a. Alien with 2 eyes …… Alienus jack B b. Alien with 3 eyes……. go to 4
4. a. Alien with splatter chest…. Alienus sam D
b. Alien without splatter…Alienus bob A
A
B
C
D
E
Taxonomic Classification & Scientific Names1. Come up with your own way to remember the 8 major categories of
classification in order. (Explain it.) answers vary Explain - (domain, kingdom, phylum, class, order, family, genus, species)
2. Explain 3 ways of writing a scientific name for an organism. (Be specific) italicized, underline, abbreviate the genus and write out the species – in all the 1st letter of the genus is capitalized and nothing else
3. What is the most diverse taxonomic level? domain4. What is the most specific taxonomic level? species5. Explain which organisms (A-D) are the closest related? Explain. B and C –
they share the same genus6. Which organism (A-D) is least like the others? Explain. D, all the others
share the same class7. List the current domains of taxonomic classification. Archaea, Bacteria,
Eukaryota 8. List the current kingdoms of taxonomic classification. Archaebacteria,
Eubacteria, Fungi, Protists, Plants, Animals
A B C DKingdom Animalia Animalia Animalia AnimaliaPhylum/Division
Chordata Chordata Chordata Chordata
Class Mammalia Mammalia Mammalia AvesOrder Primate Carnivora Carnivora AnseriformesFamily Homindae Felidae Felidae AnatidaeGenus Homo Panthera Panthera AnasSpecies sapiens leo tigris acuta