Classification of Life

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Classification

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42 Terms

1

Classification

Grouping of organisms or objects based on a set of criteria that helps organize, communicate and retain information

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2

Taxonomy

Branch of biology that identifies names and classifies species based on their natural relationships

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3

Binomial nomenclature

Linnaeus's system of naming organisms, which gives a scientific two-word Latin name to each species-the first part is the genus name and the second is the epithet.

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4

Taxon

Named group of organism, such as phylum, genus or species

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5

Genus

Taxonomic group of closely related species with a common ancester

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6

Family

Taxonomic group of similar related genera that is smaller than an order and larger than a genus

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7

Order

Taxonomic group that contains related families

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8

Class

Taxonomic group that contains one or more related orders.

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9

Phylum

Taxonomic group of related classes

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10

Division

Taxonomic term used instead of phylum to group related classes of plants and bacteria.

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11

Kingdom

Taxonomic Group of related Phyla or divisions

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12

Domain

Taxonomic group of one or more kingdoms

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13

Phylogeny

Evolutionary history of a species

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14

Character

Inherited morphological or biochemical feature that varies among species and can be used to determine patterns of descent.

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15

Cladistics

Taxonomic method that models evolutionary relationships based on shared derived characteristics and phylogenetic trees.

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16

Cladogram

Diagram with branches that represents the hypothesized phylogeny or evolution of a species or group; uses bioinformatics, morphological studies and information from DNA studies.

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17

Archaea

Prokaryotes whose cell walls do not contain peptidoglycan

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18

Protist

Unicellular, multicellular, or colonial eukaryote whose cell walls may contain cellulose, can be plantlike, animal-like or funguslike.

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19

Fungus

Unicellular or multicellular eukaryote that is stationary, absorbs nutrients from organic materials in the environment, and has cell walls that contain chitin

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20

Why is it important to classify organisms?

Prevents misnomers such as starfish/jellyfish that aren't really fish

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21

Who were the first taxonomists and what criteria did they use for classification?

Aristotle/Carolus Linnaeus, they classified organisms by their structure, behaviors and habitats.

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22

Which taxonomist came up with the naming system still in use today?

Carolus Linnaeus

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23

List the 8 taxa in order

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

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24

What is the acronym that you can use to memorize the 8 taxa?

Dumb kids prefer candy over fresh green salad

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25

Which 2 taxa are involved in naming

Genus and species

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26

How do you handwrite scientific names?

First letter of the genus name in capital the rest not, underline both words.

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27

How do you type a scientific name?

The first letter of the first word capitalized and the whole thing in italics

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28

How do you abbreviate a scientific name

First letter of the genus and the specifies epithet

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29

What language is used for scientific naming? Why?

Latin, it is the most widely understood

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30

What is a species?

A group of organisms that can breed and produce fertile offspring

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31

What is a node on a cladogram?

A place where a branch splits off from the rest of the cladogram

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32

What is a clade on a cladogram?

One "Branch" or group on a cladogram

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33

What is an outgroup on a cladogram?

They have no shared derived characteristics- used as a comparison.

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34

Which clades are the most closely related on a cladogram?

The ones that are closest to each other.

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35

Which clades are the least related on a cladogram?

The ones that are the farthest apart.

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36

How is a dichotomous key used to identify organisms?

You answer the questions on the key to narrow down the organisms that it could possibly be.

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37

What are the 3 domains?

Bacteria, Archaea, Eukarya

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38

What are the 6 kingdoms?

Protista, Fungi, Plantae, Animalia, Bacteria, Archaea

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39

Which domain does Bacteria belong to

Bacteria

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40

What domain does Fungi belong to?

Eukarya

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41

What domain does Animalia belong to?

Eukarya

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42

What domain does Archaea belong to?

Archaea

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