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Taxonomy & Classification
Terms in this set (49)
how are organisms scientifically classified?
Biologists want to better understand organisms so they can organize them
the grouping of objects or information based on similarities
what does classification do?
it provides a framework so we can study the relationships among living things and extinct species
to no longer be in existence
what is taxonomy?
the branch of biology that groups and named organisms based on their different characteristics
what are the two groups that organisms are classified as?
Plant and Animal
what is binomial nomenclature?
who developed the system of binomial nomenclature?
Carolus Linnaeus in the late 17th century
what was binomial nomenclature based on?
physical and structural similarities
(still used today)
FIRST word of the naming system in the scientific name
FIRST LETTER ALWAYS CAPITALIZED
SECOND word in the name scientific name
example: Rafaella janfar<-- genus
how are living things classified?
classified from very broad characteristics to very specific ones
what is the broadest classification
what is our modern system based on?
Theory of Evolution
all organisms originated from one common ancestor
What are the classifications?
How can we remember the classifications?
what are the 6 kingdoms?
bacteria that are ancient and live in extreme conditions
bacteria that are all over the place- standard bacteria
the "nots" - NOT fungi, plants, or animals
molds and mushrooms
make their own food and produce nutrients from the sun
CANNOT make their own food and obtains food and energy by taking in organic substances
how was our classification system changed?
6th kingdom was added = Archaebacteria
was divided into:
1) Kingdom Archaebacteria
2) Kingdom Eubacteria
true bacteria ----> prokaryotic domain
kingdoms: protists, fungi, plantae,animalea
(domain & kingdom)
-some are photosynthetic
Ex. E. coli, blue-green algae
organisms that recycle matter`
any disease-causing agent
manipulating DNA to produce a desired trait
can make their own food through photosynthesis
-widest variety of organisms
-all are eukaryotes
-can be uni or multicellular
-paramecium and amoeba
DO NOT fit into the other kingdoms
-ALL are heterotrophs
-Uni- or multicellular
-lichens=mutualistic symbiotic relationship between fungi & algae
-asexual & sexual reproduction
ex. yeast, mold, mushroom
secrete digestive juices outside of the environment
DOES NOT TAKE PLACE IN THE CELL
All are multicellular, autotrophic, and sessile eukaryotes
Cell walls = cellulose
-All heterotrophic, multicellular eukaryotes
-Most are motile
-Most do sexual reproduction
Sperm [n] + Egg [n] = Zygote [2n]
Annelida (Animal Phyla)
Includes over 15,000 species
Usually found in wet environments
Can be 1 mm to 3 m long
Coelenterata (Animal Phyla)
-Primitive & simple
-2 cell layers: external & internal
-Are a sac of jelly with a hollow body cavity
◦ Ex: hydra & jellyfish
Arthropoda (Animal Phyla)
Ex: grasshopper, lobster, spider
Chordata (Animal Phyla)
-Have a dorsal (back) nerve: i.e., spinal cord
◦ Ex: humans, sharks, frogs
Recommended textbook explanations
Nelson Science Perspectives 10
Christy C. Hayhoe, Doug Hayhoe, Jeff Major, Maurice DiGiuseppe
Kenneth R. Miller, Levine
Texas Science Fusion: Grade 7
Biology Study Workbook A
Kenneth R. Miller, Levine
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