diversity of life classification is the grouping of things according to internal and external...
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Diversity of Life
Classification is the grouping of things according to internal and external characteristics
The science of classifying organisms is known as taxonomy
Aristotle grouped animals according to the way they moved ◦Walk◦Fly◦Swim
HUGE problem since birds and bees were classified in the same group!
Developed by LinnaeusTwo-name systemEach organism has a genus and a species name
First name (genus); second name (species)
Combination of the genus and species name of an organism
Scientific names of organisms are always italicized or underlined: (Genus is capitalized & species name is lower-case)
DomainKingdomPhylumClass
OrderFamilyGenusSpecies
D id K ing P hillip C ome O ver F or G ood S oup
Domain
◦Bacteria – (prokaryotic) no nucleus Unicellular Reproduce asexually by diving in two
Come in 3 basic shapes rod, round and spiral
Examples: strep, E. coli, salmonella
Archaea – (prokaryotic) no nucleus
◦Unicellular◦Different from any other form of life chemically
◦Can live in extreme conditions Thermophiles (heat) Halophiles (salt) Methanogens (methane)
Eukarya – (eukaryotic) has nucleus◦ Unicellular (protists and some fungi)◦ Multicellular (plants, animals and some fungi)◦ Have a nucleus Contain 4 kingdoms each with different
characteristics Protista Animalia Plantae Fungi
Unicellular or very simple multicellular Can be:
◦ Plant-like – autotrophs (producer) diatoms, algae, volvox, euglena
◦ Animal-like – heterotrophs (consumer) Ameba, paramecium, euglena Based on locomotion
Cilia –little hairs (ciliates like the paramecium)
flagellum(a) – whip like tail (flagellates like the euglena)
pseudopod(s -ia) –false feet (sarcodines like the ameba)
◦ Fungus-like – saprotrophs (decomposer) slime mold
Multicellular Very DIVERSE Heterotrophs (consumers) Examples: ox, people, bear, goose,
octopus, narwhal, fish, birds, insects, spiders and MANY MORE
Multicellular Autotrophs (producers) Examples: trees, flowering, mosses,
water plants
Mostly multicellular except for yeast Saprotrophs (decomposers) 3 main groups:
◦ Mushrooms ◦ Molds ◦ Yeasts are unicellular (single-celled)
Can be harmful (cause diseases) or helpful (edible, used to make food and medicine)