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Cambridge IGCSE Biology

Click Biology. Cambridge IGCSE Biology. Classification and Keys. 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. Biological classification:. K ingdom P hylum C lass O rder F amily G enus

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Cambridge IGCSE Biology

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  1. ClickBiology Cambridge IGCSE Biology Classification and Keys

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

  4. Genus Genus Genus species species species The binomial system gives organisms a two word name showing the genus and species Panthera leo Panthera tigris Panthera pardus

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

  6. 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. cap frill Keys use a series of questions to identify unknown organisms Identify the fungus • Stalk does not have a frill go to 2Stalk has a frill go to 3 • Stem is brown Fungus AStem is yellow Fungus B • Cap has spots go to 4Cap does not have spots Fungus C • Cap is red Fungus DCap is brown Fungus E

  8. 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. Cambridge IGCSE Biology www.ClickBiology.com

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