Podcast
Questions and Answers
What does the root word 'taxis' mean in Greek?
What does the root word 'taxis' mean in Greek?
Who is considered the father of taxonomic classification?
Who is considered the father of taxonomic classification?
What is the most specific category for life on Earth in taxonomic classification system?
What is the most specific category for life on Earth in taxonomic classification system?
What did Carolus Linnaeus originally use to classify organisms into taxonomic groups?
What did Carolus Linnaeus originally use to classify organisms into taxonomic groups?
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How many levels of taxonomic rank were proposed by Linnaeus?
How many levels of taxonomic rank were proposed by Linnaeus?
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Which domain includes the oldest organisms and those that can live in extreme environments?
Which domain includes the oldest organisms and those that can live in extreme environments?
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Which taxonomic level is the most specific?
Which taxonomic level is the most specific?
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Which kingdom includes marine mollusks?
Which kingdom includes marine mollusks?
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Which taxon is below order and contains even fewer organisms, with examples including Canidae (dogs and related species)?
Which taxon is below order and contains even fewer organisms, with examples including Canidae (dogs and related species)?
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Which domain is known for including familiar disease-causing bacteria?
Which domain is known for including familiar disease-causing bacteria?
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Study Notes
- Prokaryotic organisms are more diverse than originally thought based on genetic sequencing data
- Taxonomy is a system of organizing life from most broad to most specific: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
- Three main domains: Archaea, Bacteria, and Eukarya
- Archaea are the oldest organisms and can live in extreme environments
- Bacteria are also prokaryotes, but later in evolutionary time and include familiar disease-causing bacteria
- Eukarya includes all eukaryotic organisms and cells, with four kingdoms: Plantae, Animalia, Fungi, and Protista
- Phylum is the next most specific taxon below kingdom, with many phyla within each kingdom, including Porifera (sea sponges), Cnidaria (jellyfish), Platyhelminthes (flatworms), Annelida (earthworms), and Molluska (marine mollusks)
- Class taxonomy falls under phylum and contains fewer organisms, with examples including Myxini (hagfish) and Mammalia (mammals)
- Order is the taxon under phylum and contains fewer organisms, with examples including Artiodactyla (even-toed, hooved mammals) and Carnivora (meat-eating mammals)
- Family is the taxon below order and contains even fewer organisms, with examples including Canidae (dogs and related species) and Felidae (cats)
- Genus is the taxon below family, with examples including Felis (cats) and Panthera (tigers, leopards, etc.)
- Species is the most specific taxonomic level and is the second part of binomial nomenclature, with examples including P. tigris (tiger) and P. leo (lion)
- Sometimes, organisms do not fit neatly into the taxonomic categories, and intermediate levels may exist.
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Description
Learn about taxonomic classification and its significance in organizing different species of life on Earth. Discover how the hierarchical system ranks categories to become more specific, ultimately reaching the level of species.
