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Holt Chapter 10 Classification
Scientific Naming and History of Classification
29
Biology
7th Grade
03/28/2006

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Term
Classification
Definition
the arrangement of organisms into orderly groups based on their imilarities and presumed evolutionary relationships
Term
Kingdom
Definition
the most general of the seven levels of classification. Currently, there are six kingdoms of organisms
Term
Phylum
Definition
the level of classification after kingdom; the organisms from all the kingdoms are sorted
into several phyla
Term
Class
Definition
the level of classification after phylum; the organisms in all phyla are sorted into classes
Term
Order
Definition
the level of classification after class; the organisms in all the classes are sorted into orders
Term
Family
Definition
the level of classification after order; the organisms in all orders are sorted into families
Term
Genus
Definition
the level of classification after family; the organisms in all families are sorted into genera
Term
Species
Definition
the most specific of the seven levels of classification; characterized by a group of organisms
that can mate with one another to produce fertile offspring
Term
Taxonomy
Definition
the science of identifying, classifying, and naming living things
Term
Dichotomous Key
Definition
an aid to identifying unknown organisms that consists of several pairs of descriptive statements; of each pair of statements, only one will apply to the unknown organism, and that will lead to another set of statements, and so on, until the unknown organism can be identified
Term
Bacteria
Definition
extremely small, single-celled organisms without a nucleus; prokaryotic cells
Term
Archaebacteria
Definition
a classification kingdom that contains ancient bacteria that thrive in extreme
environments
Term
Eubacteria
Definition
a classification kingdom containing mostly free-living bacteria found in many varied environments
Term
Protista
Definition
a kingdom of eukaryotic single-celled or simple multicellular organisms; kingdom contains all eukaryotes that are not plants, animals, or fungi
Term
Plantae
Definition
the kingdom that contains plants—complex, multicellular organisms that are usually green and use the sun’s energy to make sugar by photosynthesis
Term
Fungi
Definition
a kingdom of complex organisms that obtain food by breaking down other substances in their surroundings and absorbing the nutrients
Term
Animalia
Definition
the classification kingdom containing complex, multicelluar organisms that lack cell walls, are usually able to move about, and possess nervous systems that help them be aware of
and react to their surroundings
Term
Linnaeus founded the science of_______
Definition
taxonomy
Term
All of the organisms classified into a single kingdom are then divided into one of several_______
Definition
phyla
Term
Archaebacteria and eubacteria are _______________
Definition
prokaryotes
Term
Linnaeus began naming organisms using _______________
Definition
a two-part scientic names
Term
Scientists use _______________________ to help them identify unknown organisms
Definition
Dichotomous Keys
Term
Because it includes species that live 3,000 years and specimens that grow to 91.5 m, Kingdom ______________contains some of the largest and longest-lived organisms on Earth.
Definition
Plantae
Term
Originally classified as plants, _____ are now their own kingdom because they do not carry out photosynthesis.
Definition
Fungi
Term
Prokaryotes that live in familiar environments such as soil, water, or the human body belong to the kingdom _______________________ . Prokaryotes are cells that do not contain ____________.
Definition
Eubacteria, nuclei
Term
What kind of organism thrives in hot springs and other extreme environments?
Definition
Archaebacteria
Term
Most bacteria are classified in which kingdom?
Definition
Eubacteria
Term
The scientific name for the European white water lily is Nymphaea alba . What is the genus to which this plant belongs?
Definition
Nymphaea
Term
"Kings Play Chess On Fine-Grained Sand” is a mnemonic device that helps one remember
Definition
The six levels of classification: Kingdom, Phylum, Class, Order, Family, Genus, and Species.
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