Transcript Species

Unit 1: Chemical Basis of
Life
Activity #2: Taxonomy
Classification of Organisms
Taxonomy- science of classification
 Involves grouping and naming
organisms
 Binomial nomenclature- classification
system in which each species is
assigned a two-part scientific name.
 Genus: the first word
 Species: the second word
 often a descriptive word
 i.e.: color or physical patterning

Species

A group of similar organisms that can
breed and produce fertile offspring
Common Name
Scientific Name
Daffodil
Narcissus
pseudonarcissus
Human
Homo sapiens
Bullfrog
Rana catesbiana
Green frog
Rana clamitans
Leopard frog
Rana pipiens
When species have characteristics in
common, grouped into a common
larger group
 Genus
 Organisms are placed into larger
more general groups based on
characteristics
 Technique: start with the general
and move to the more specific until
“zero in” on a particular species

Linnaean Taxonomic Categories

7 major categories in classifying
organisms, from most general to least
general (most specific)
K P C O F G S
 Kingdom
 Phylum
 Class
 Order
 Family
 Genus
 Species
Grizzly and Black Bear
kingdom
Human
Animal
Wolf
Animal
Turtle
Animal
Mosquito
Animal
phylum
class
order
family
genus
species
Chordata
Mammalia
Primates
Hominidae
Homo
sapiens
Chordata
Mammalia
Carnivora
Canidae
Canis
lupus
Chordata
Reptilia
Chelonia
Emydidae
Terrapene
carolina
Arthropoda
Insecta
Diptera
Culicidae
Theobaldia
anulata
1. Of the following, the broadest (most general)
classification category is
A. class
B. phylum
C. genus
D. order
2. Two organisms classified in the same class must be in
the same
A. phylum
B. family
C. order
D. genus
Human
Wolf
Turtle
Mosquito
kingdom
phylum
Animal
Chordata
Animal
Chordata
Animal
Chordata
Animal
Arthropoda
class
Mammalia
Mammalia
Reptilia
Insecta
order
Primates
Carnivora
Chelonia
Diptera
family
Hominidae
Canidae
Emydidae
Culicidae
genus
Homo
Canis
Terrapene
Theobaldia
species
sapiens
lupus
carolina
anulata
3.Two organisms classified in the same class could be in the same
A. genus
B. order
C. family
D. all of these
4.Of the following, Rana catesbiana is most closely related to
A. Rana pipiens B.Homo sapiens C.Xenopus laevis D. Felis domesticus
5.Of the following, the correct order from largest, most general
group, to smallest, most specific group, is
A. species, genus, family, class, order C. class, order, family, genus,
species
B. species, family, genus, class, order D. class, genus, order, family,
species
6 Kingdoms of Living Things
Viruses: Alive or Not?
 Some
debate over whether viruses are living or
nonliving. Most agree that they are nonliving.
 Why?
 Unable to INDEPENDENTLY carry out all life
processes
 Particles made of DNA & proteins that can
replicate only by infecting living cells
 Do not belong to any kingdom and don't
contain any cells
 Therefore, considered nonliving
Influenza