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Biological Classification. Why classify? Humans have developed classification systems in order to make sense of the abundant biological diversity that.

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Presentation on theme: "Biological Classification. Why classify? Humans have developed classification systems in order to make sense of the abundant biological diversity that."— Presentation transcript:

1 Biological Classification

2 Why classify? Humans have developed classification systems in order to make sense of the abundant biological diversity that exists in nature.

3 Taxonomy the science of naming organisms and assigning them to groups Taxonomists search for previously unknown organisms, determining their relationships to known organisms, and giving them names.

4 Chordata Panthera The Biological Classification System The system is hierarchical. –Larger groups are more general and smaller groups are more specific. –For example, the phylum Chordata includes both lions and lionfish, but the genus Panthera includes only lions.

5 The Biological Classification System The system is phylogenetic. –It is meant to reflect the evolutionary interrelatedness among groups. –For example, the grey wolf and the dog both are placed in the genus Canis because of their close evolutionary relationship.

6 Seven Levels of Taxonomic Classification Kingdom Phylum Class Order Family Genus Species

7 Kingdom, Phylum…what? An easy way to remember the classification levels: King Philip Came Over From Great Spain Try to make up your own!

8 Seven Levels of Taxonomic Classification for the… Kingdom Phylum Class Order Family Genus Species Grizzly Bear

9 Kingdom The most general of the seven levels. Most biologists currently recognize six different kingdoms: Archaebacteria, Eubacteria, Protists, Fungi, Plants, Animals

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11 Phylum (plural: phyla) Each kingdom is subdivided into smaller, more specific groups called phyla.

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13 Class Each phylum is subdivided into smaller groups called classes.

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15 Order Each class is subdivided into smaller groups called orders.

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17 Family Each order is subdivided into smaller groups called families.

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19 Genus (plural: genera) Each family is subdivided into smaller groups called genera.

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21 Species Each genus is subdivided into smaller groups called species. The species is the most specific level of classification.

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23 Scientific Names The scientific name of an organism contains two partsthe name of the genus and the name of the species.

24 Writing Scientific Names The rules for writing scientific names: -CAPITALIZE the first letter of the genus name. -Do not capitalize the species name. -Both names must be underlined or italicized. Example: human = Homo sapiens

25 Seven Levels of Taxonomic Classification for the… Kingdom-Animalia Phylum-Chordata Class-Mammalia Order-Carnivora Family-Felidae Genus-Panthera Species-leo Lion

26 Seven Levels of Taxonomic Classification for the… Kingdom-Animalia Phylum-Chordata Class-Mammalia Order-Primates Family-Hominidae Genus-Homo Species-sapiens Huma n

27 Seven Levels of Taxonomic Classification for the… Kingdom-Protista Phylum-Sarcodina Class-Rhizopoda Order-Amoebida Family-Amoebidae Genus-Amoeba Species-proteus Amoeba

28 Seven Levels of Taxonomic Classification for the… Kingdom-Animalia Phylum-Chordata Class-Mammalia Order-Carnivora Family-Canidae Genus-Canis Species-familiaris Dog

29 Seven Levels of Taxonomic Classification for the… Kingdom-Plantae Phylum-Tracheophyta Class-Anthophyta Order-Asterales Family-Compositae Genus-Taraxacum Species-officinale Dandelion

30 Seven Levels of Taxonomic Classification for the… Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Xenarthra Family: Myrmecophagidae Genus Tamandua Species: tetradactyla Collared Anteater

31 Assignment (Due Monday) Find and write down all seven major levels of taxonomic classification for the organism of your choice.


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