B15 - Classification Flashcards
classification
organism of living things into groups according to their similarities/diff
why classify organsims
-easier to study
-make sense of living world
- observe relations and biodiversity
Classification began
-18th century
- carl linnaeus
what did linnaeus do first
group organisms depending on their structure/ characteristics
Linnaen system
domain
Kingdom
phylum
class
order
family
genus
species
linnaen system mnemonic
dear
king
philip
came
over
for
good
soup
Binomial system
organisms are named by genus and species
when linnaeus proposed his system ..
fewer known species
-so only 2 kingdoms were suggested
as microscopes developed and biochemical processes progressed
scientists could compare internal structures of cells
- new models of classification system were proposed
species
members of the same species are similar
-can breed to produce fertile offspring
species (group)
smallest group of clearly identified living organisms in Linnaeus’ system
3 domain system came about by
-more organisms were discovered
- leading to idea of higher level (domain)
3 domain system idea stems from
-detailed analysis of the biochemistry of cell ribosomes an the way the diff cells reproduce
3 domain system is divided into
-archaea
- bacteria
- eukaryota
archaea
primitive bacteria usually lives in extreme conditions
