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More Classification Notes

Explore the classification of organisms based on similarities and differences, and understand binomial nomenclature.

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More Classification Notes

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  1. More Classification Notes

  2. Taxon: A group of similar organisms • As we move from kingdom to species, organisms within each taxon become more similar to one another.

  3. How do we classify? • By cell structure, food-getting methods and metabolism, external coverings. • DNA and genetic code is increasingly more important. • Classification of organisms is not perfect-some organisms are reclassified when more is learned about them. • Some have even suggested adding more kingdoms.

  4. At which taxon do you start to see differences? • Which two of the three organisms are more related? • At what point do the classifications of the cat and grizzly bear diverge? Order Domestic cat and Grizzly Bear Family

  5. Binomial Nomenclature (two name naming) • Every scientific name is made of two words (binomial) • First word is Genus is capitalized • Second word is Species name and is lowercase • Genus functions as a noun, Species functions as an adjective. Homo Felis Ursus sapiens silvestris arctos Genus species

  6. Be able to look at a scientific name and determine which two organisms are the most closely related. Of the three choices below, which two are the most closely related? I. Red hat II. Blue hat III. Red ball

  7. Answer: the Red hat and the Blue hat. They are closest related because their nouns are the most similar. The adjective only describes the noun. Now, which of the following three pairs are the most closely related? Why? I. Musdomesticus Muscadomestica II. Galleusdomesticus Musdomesticus III. Felisconcolor Felisrufus

  8. mouse fly chicken • Musdomesticus Muscadomestica 2. Galleusdomesticus Musdomesticus 3. Felisconcolor Felisrusus Noun adjective If someone asks you which organisms are most similar, look for ones with the same “noun” as first word. mouse cougar bobcat

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