only brief quotations are allowed and then only if indicated as such. You should reformulate existing text and use your own words to explain what you have read. It is not acceptable to retype existing text and just acknowledge the source in a footnote – you should be able to relate the idea or concept, without repeating the original author to the letter. The aim of the assignments is not the reproduction of existing material, but to ascertain whether you have the ability to integrate existing texts, add your own interpretation and/or critique of the texts and offer a creative solution to existing problems. Be warned: students who submit copied text will obtain a mark of zero for the assignment and disciplinary steps may be taken by the Faculty and/or University. It is also unacceptable to do somebody else’s work, to lend your work to them o r to make your work available to them to copy – be careful and do not make your work available to anyone! Plagiarism is a serious offence and you should familiarise yourself with the plagiarism policy of the NWU. Please refer to the Policy on Academic Integrity which is found on the following website:
Study unit 1 1 1 INTRODUCTION, TAXONOMY AND DICHOTOMOUS KEYS Approximate study time needed to complete this study unit Total Time: Approximately 6 hours Contact sessions: 2 Self study: 4 hours Study unit outcomes On completion of this study unit you should be able to: Name, discuss and compare the different classification systems of life on earth; evaluate the various theories about the origin of life on earth; Distinguish between the following terms with suitable examples: systematics, taxonomy, classification, phylogeny, species, taxon; Name the different taxa with appropriate examples; discuss the characteristics used to classify organisms describe binominal nomenclature with suitable examples; compare recent phylogenetic trees of animals and discuss the reasons for the differences; draw up a phylogenetic tree for the identification of organisms; give the definition and to compile a dichotomous key and to evaluate its use in the Life Sciences classroom; use a dichotomous key for the identification of objects or organisms; distinguished between the following concepts regarding animals: body plan, symmetry, embryonic development, germ layers, levels of organization, cephalization, segmentation and coelom.