Classification of Living Organisms (AQA GCSE Biology): Flashcards

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Classification
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Classification (definition)

Organizing organisms into groups by structure & characteristics

Developer of the Linnaean system

Carl Linnaeus

When Linnaean system developed

1700s

Linnaean hierarchy levels (in order)

Kingdom, phylum, class, order, family, genus, species

Binomial system definition

Naming species using two Latin names

Two parts of binomial naming

First part: genus; second part: species

Scientific name of ladybug

Harmonia axyridis

Introducer of three-domain system

Carl Woese

Archaea domain characteristics

Primitive bacteria-like organisms in extreme environments

Bacteria domain description

True bacteria, distinct from archaea

Eukaryota domain characteristics

Organisms with cells that have a nucleus enclosed in membranes

Why three-domain system developed

Scientific advances showed organisms more distantly related than believed

What evolutionary trees show

Evolutionary relationships between species

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