Lesson 9- Finding Order In Diversity Flashcards
(Blank) (blank) and other processes have led to a staggering diversity of organisms.
Biologists have identified and named about
(Blank) million species so far.
They estimate that (blank) million additional species have yet to be discovered.
Natural selection, 1.5 million, 2-100 million
Why Classify?
To study the diversity of life, biologists use a (blank) (blank) to name organisms and group them in a logical manner.
classification system
In the discipline of (blank), scientists classify organisms and assign each organism a universally accepted name
taxonomy
Assigning Scientific Names
Common names of organisms vary, so scientists assign one name for each species.
Is (blank) (blank)
Always in Latin.
Carolus Linneaus developed a naming system called (blank) (blank).
binomial nomenclature.
Scientific Name
Dog:
Cat:
Dog: Canis familiaris
Cat: Felis catus
In binomial nomenclature, each species is assigned a (sentence blank)
two-part scientific name.
The scientific name is
italicized
Linnaeus not only named species, he also grouped them into categories.
Linnaeus’s System of Classification
Linnaeus’s seven levels of classification are-from smallest to largest-
•species
• genus
• family
• order
• class
•phylum
•kingdom
Each level is called a (blank), or (blank) (blank). Species and genus are the two smallest categories
taxon, taxonomic category
Genera that share many characteristics are grouped in a larger category, the (blank)
family
An (blank) is a broad category composed of similar families.
order
The next larger category, the (class), is composed of similar orders.
class
Several different classes make up a (blank).
phylum
