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Classification
- Basics
- Grouping together organisms
- Classification is the act of
arranging organisms into groups
based on their similarities and
differences.
- Makes it easier
for scientists to
identify then and
to study them
- Taxonomy is the
study of
classification
- Makes it easier
for scientists to
identify then and
to study them
- Taxonomic hierarchy
- Domain, Kingdoms, Phylum,
Class, Order, Family, Genus,
Species
- Domain, Kingdoms, Phylum,
Class, Order, Family, Genus,
Species
- Classification is the act of
arranging organisms into groups
based on their similarities and
differences.
- Five kingdoms
- Prokaryotae
- Prokaryotic,
unicellular, no nucleus,
less than 5um
- Prokaryotic,
unicellular, no nucleus,
less than 5um
- Protoctista
- Eukaryotic cells, live in
water, single or simple
multicellular
- Eukaryotic cells, live in
water, single or simple
multicellular
- Fungi
- Eukaryotic, chitin cell walls,
saprotropic, multinucleate
- Eukaryotic, chitin cell walls,
saprotropic, multinucleate
- Animalia
- Eukaryotic,
multicellular,
heterotropic, no cell
walls
- Eukaryotic,
multicellular,
heterotropic, no cell
walls
- Plantae
- Eukaryotic,
multicellular, cell walls
made of cellulose,
photosynthesise,
contain chlorophyll
and are autotropic
- Eukaryotic,
multicellular, cell walls
made of cellulose,
photosynthesise,
contain chlorophyll
and are autotropic
- Prokaryotae
- Phylogeny
- Is the study of the evolutionary history
of groups of organisms.
- It tells us who's related to whom and how
closely related they are
- It tells us who's related to whom and how
closely related they are
- Is the study of the evolutionary history
of groups of organisms.
- Grouping together organisms
- Evolution of classification
- Range of evidence
- Molecular evidence -
similarities in proteins
and DNA.
- Embryological evidence -
similarities in early stages of
development
- Anatomical evidence
- structure and
function of the body
- Behavioural evidence -
behaviour and social
organisation
- New technologies
can result in new
discoveries
- Molecular evidence -
similarities in proteins
and DNA.
- Three domains
- Organism with a nucleus are
in the domain Eukarya.
Organisms without a nucleus
(Prokayotic) are in both
Archaea and Bacteria
- The 3 domains were
proposed because of new
evidence. The Prokayotae
were into two domains as
evidence showed large
differences between
Archaea and Bacteria
- Molecular
evidence -
Based on
differences in
RNA
- Cell
membrane
evidence -
Differences in
bonds of
lipids
- Molecular
evidence -
Based on
differences in
RNA
- Organism with a nucleus are
in the domain Eukarya.
Organisms without a nucleus
(Prokayotic) are in both
Archaea and Bacteria
- Range of evidence
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