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ClickBiology Cambridge IGCSE Biology Classification and Keys ClickBiology.

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Presentation on theme: "ClickBiology Cambridge IGCSE Biology Classification and Keys ClickBiology."— Presentation transcript:

1 ClickBiology Cambridge IGCSE Biology Classification and Keys ClickBiology

2 You will need to be able to: Define and describe the binomial system of naming species Use a dichotomous key to identify an unknown organism

3 ClickBiology Biological classification: Kingdom Phylum Class Order Family Genus Species Animalia Chordata Mammalia Carnivore Felidae Panthera pardus Taxonomic ranks Panthera pardus

4 ClickBiology The binomial system gives organisms a two word name showing the genus and species Panthera leoPanthera tigrisPanthera pardus GenusspeciesGenus species

5 ClickBiology There are other classification systems: Cladistics: Based on similarity and differences between DNA and RNA sequences Extended AAAA AACA AGAA AGTAAGTA AGGA

6 ClickBiology You will need to be able to: Define and describe the binomial system of naming species Use a dichotomous key to identify an unknown organism

7 ClickBiology Keys use a series of questions to identify unknown organisms 1.Stalk does not have a frillgo to 2 Stalk has a frillgo to 3 2.Stem is brownFungus A Stem is yellow Fungus B 3.Cap has spotsgo to 4 Cap does not have spotsFungus C 4.Cap is redFungus D Cap is brownFungus E frill cap Identify the fungus

8 ClickBiology Now you should be able to Define and describe the binomial system of naming species Use a dichotomous key to identify an unknown organism

9 ClickBiology Cambridge IGCSE Biology


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