A Level Biology Revision Lesson 188:

Classification of Organisms - Phylogeny

Task 1. Check Where this Lesson fits into your Exam Specification!

Task 2. Watch the Revision Lesson in Full.

188.-Classification-of-Organisms---Phylo
 

Check Your Spec!

★ AQA A Level Biology Specification Reference: -  3.4.5 Species and taxonomy. A phylogenetic classification system attempts to arrange species into groups based on their evolutionary origins and relationships. It uses a hierarchy in which smaller groups are placed within larger groups, with no overlap between groups. Each group is called a taxon (plural taxa). One hierarchy comprises the taxa: domain, kingdom, phylum, class, order, family, genus and species. Each species is universally identified by a binomial consisting of the name of its genus and species, eg, Homo sapiens.

 

★ CIE A Level Biology Specification Reference: - 18.2 Classification: Organisms studied locally may be used to show how hierarchical classification systems are organised. a) describe the classification of species into the taxonomic hierarchy of domain, kingdom, phylum, class, order, family, genus and species.

 

★ Edexcel A Level Biology (Biology A – Salters-Nuffield) Specification Reference: - Topic 4: Biodiversity and Natural Resources. Investigation of taxonomic hierarchy. 4.6 i) Understand that classification is a means of organising the variety of life based on relationships between organisms using differences and similarities in phenotypes and in genotypes, and is built around the species concept. 

★ Edexcel A Level Biology (Biology B) Specification Reference: - Topic 3: Classification and Biodiversity. 3.1 Classification i Know that the classification system consists of a hierarchy of domain, kingdom, phylum, class, order, family, genus and species.

★ OCR A Level Biology (Biology A) Specification Reference: - 4.2.2 Classification and evolution. Classification is an attempt to impose a hierarchy on the complex and dynamic variety of life on Earth. Learners should be able to demonstrate and apply their knowledge and understanding of: (a) the biological classification of species. To include the taxonomic hierarchy of kingdom, phylum, class, order, family, genus and species AND domain. (b) the binomial system of naming species and the advantage of such a system. d) the relationship between classification and phylogeny. Cladistics and phylogenetic definition of species.

★ OCR A Level Biology (Biology B) Specification Reference: - 3.1.3 The development of species: evolution and classification. Learners should be able to demonstrate and apply their knowledge and understanding of: (a) the concepts of biological classification and species. To include the taxonomic ranks in the hierarchy of classification (domain, kingdom, phylum, class, order, family, genus, species) AND an outline of the biological and phylogenetic species concepts AND an outline of the biological and phylogenetic species concepts. 

WJEC A Level Biology Specification Reference: - Continuity of Life. 1. All organisms are related through their evolutionary history. This topic covers biodiversity and classification. The variety of living organisms that exists today has evolved as a result of natural selection. Modern techniques have allowed more accurate classification to confirm evolutionary relationships. (a) the classification of organisms into groups based on their evolutionary relationships and that classification places organisms into discrete and hierarchical groups with other closely related species (b) the need for classification and its tentative nature.

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