Taxonomy!Branch of biology used to classify organisms according to their characteristic similaritiesConsider phylogeny (evolutionary history) relationships of organisms' structures (Morphology, reproduction, nutrition) A man made science
How do humans bring order to the diversity of life existing today??
Ancient Greek Philosopher. Devised system of classification based on organism behavior and structure. Aristotle
Swedish Naturalist (1707-1778) Carolus Linnaeus
Organisms grouped according to morphology into hierarchal categories. (Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species) Classification of Organisms is from general to specificFinal two categories (genus species) created a scientific method of naming organisms. Linnaeus System
Two word system of naming organismsGenus & speciesUse Latin to assign a single identifying name to every discovered organism
Genus is Capitalized and species is notWritten in italics or underlined Binomial Nomenclature
Have you ever eaten dolphin?
Common Name: Dolphin Common Name: Mahi-Mahi, DolphinScientific name: Scientific name: Tursiops truncatus Coryphaena hippurus Why have a universal language of scientific names?
Biological Hierarchy of Classification
Primitive single celled prokaryotic organisms, have cell walls with no peptidoglycan, adapted to extreme conditions, may be autotrophic or heterotrophic
Single-celled prokaryotic organisms that have cell walls with pedidoglycan, autotrophic or heterotrophic
Bacteria is the oldest organism ever!The belong to the kingdom MONERAAll bacteria have NO NUCLEUS, which means that their DNA could be floating all around the cytoplasm.
Bacterial DNA is arranged in a CIRCULAR shape (plasmid)Bacteria are just like people, they come in all different shapes and sizes. The three shapes are :RODSPIRALROUND
Diverse group of eukaryotes, mostly unicellular, can be animal like heterotrophy, protozoans (zooplankton) or plant-like autotrophs algae (phytoplankton)Protista
If you look at a drop of pond water under a microscope, all the "little creatures" you see swimming around are protists.
Protists are very diverse in how they acquire food and energy.Protozoa : heterotrophs which feed on other plants and animals.Algae: autotrophic protists, (make their own food)
Phylum- RhizopodaPhylum-ForaminiferaPhylum-ChlorophytaPhylum- Rhodophyta
Non-motile, mostly multicellular, eukaryotic heterotrophs, have cell walls containing chitin.
Multicellular eukaryotic chloroplast containing autotrophs, have cell walls containing cellulose.
Multicellular, eukaryotic heterotrophy lacking cell walls, primarily sexual reproducers, most show some level of anatomical organization with specialized cells. Animalia