Classification of living organisms (4.6.4) | AQA GCSE Combined Science: Trilogy (8464) — Biology — Foundation | KnowledgeSet

Classification of living organisms

Biology (Combined Science) · GCSE · AQA · AQA GCSE Combined Science: Trilogy (8464) — Biology — Foundation · Specification point · 4.6.4 · Inheritance, variation and evolution

Classification by shared features

Phylogenetic classification

Interpreting evolutionary trees

Binomial nomenclature

Three-domain system

Evidence for classification and evolutionary trees

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Learning Objectives

4.6.4 Classification of living organisms

Content	Key opportunities for skills development
$Traditionally living things have been classified into groups depending on their structure and characteristics in a system developed by Carl Linnaeus. Linnaeus classified living things into kingdom, phylum, class, order, family, genus and species. Organisms are named by the binomial system of genus and species.$
$Students should be able to use information given to show understanding of the Linnaean system. Students should be able to describe the impact of developments in biology on classification systems. As evidence of internal structures became more developed due to improvements in microscopes, and the understanding of biochemical processes progressed, new models of classification were proposed. Due to evidence available from chemical analysis there is now a ‘three-domain system’ developed by Carl Woese. In this system organisms are divided into: Archaea (primitive bacteria usually living in extreme environments) Bacteria (true bacteria) Eukaryota (which includes protists, fungi, plants and animals).$	$WS 1.1 Understand how scientific methods and theories develop over time.$

Content

Key opportunities for skills development

Traditionally living things have been classified into groups depending on their structure and characteristics in a system developed by Carl Linnaeus. Linnaeus classified living things into kingdom, phylum, class, order, family, genus and species. Organisms are named by the binomial system of genus and species.

Students should be able to use information given to show understanding of the Linnaean system. Students should be able to describe the impact of developments in biology on classification systems. As evidence of internal structures became more developed due to improvements in microscopes, and the understanding of biochemical processes progressed, new models of classification were proposed. Due to evidence available from chemical analysis there is now a ‘three-domain system’ developed by Carl Woese. In this system organisms are divided into: Archaea (primitive bacteria usually living in extreme environments) Bacteria (true bacteria) Eukaryota (which includes protists, fungi, plants and animals).

WS 1.1 Understand how scientific methods and theories develop over time.