Presentation on theme: "Taxonomy!!. Taxonomy! Branch of biology used to classify organisms according to their characteristic similarities Consider phylogeny (evolutionary."— Presentation transcript:
Taxonomy! Branch of biology used to classify organisms according to their characteristic similarities Consider 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 specific Final two categories (genus species) created a scientific method of naming organisms. Linnaeus System
Two word system of naming organisms Genus & species Use Latin to assign a single identifying name to every discovered organism Genus is Capitalized and species is not Written in italics or underlined Binomial Nomenclature
Have you ever eaten dolphin? Common Name: Dolphin Common Name: Mahi-Mahi, Dolphin Scientific name: Tursiops truncatus Coryphaena hippurus Why have a universal language of scientific names?
Primitive single celled prokaryotic organisms, have cell walls with no peptidoglycan, adapted to extreme conditions, may be autotrophic or heterotrophic Archeabacteria
Single-celled prokaryotic organisms that have cell walls with pedidoglycan, autotrophic or heterotrophic Eubacteria
Bacteria is the oldest organism ever! The belong to the kingdom MONERA All bacteria have NO NUCLEUS, which means that their DNA could be floating all around the cytoplasm. Bacteria
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 : 1.ROD 2.SPIRAL 3.ROUND
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)