Classification- putting things into groups based on shared characteristics There have been many different ideas about how to classify living things.

Classification- putting things into groups based on shared characteristics There have been many different ideas about how to classify living things. Aristotle placed all organisms into 2 large groups- plants and animals

Linnaeus founded modern taxonomy. Taxonomy- the science of describing, classifying, and naming living things Based on 7 hierarchical categories Simplified the naming of living things by giving each species a two-part specific name Binomial nomenclature

Felis domesticus GenusSpecies In a scientific name, the first part of the name is the organisms genus. Similar species are grouped into one genus. Ex: Felis The second part of the name identifies the species- a group of organisms that have similar traits and are able to produce fertile offspring.

Panthera tigrisPanthera leo

Taxonomists use an eight- level system to classify living things based on shared characteristics. The more characteristics the organisms share, the more closely related the organisms may be.

Domain Kingdom Phylum Class Order Family Genus Species

Every living thing is classified into one of the 3 Domains: 1.Archea 2.Bacteria 3.Eukarya

ARCHAEBACTERIA Unicellular prokaryotes Often live in harsh environments some produce food by chemosynthesis (energy obtained from places other than the sun)

Unicellular prokaryotes Have a Cell wall and membrane Most abundant organisms

EUKARYOTES Complex cells; nuclei and organelles in cells Some are unicellular Some are multicellular The domain Eukarya is divided into 4 Kingdoms: 1. Protista 2. Fungi 3. Plantae 4. Animalia

One celled or Multicellular organisms that can either be plant- like, animal like, or both Algae, Amoebas, Paramecium, Euglena

Multicellular Cell wall Does not perform photosynthesis Absorbs nutrients Reproduce using spores.

Cell wall Perform photosynthesis Vascular vs. nonvascular Flowering vs. nonflowering

Multi-cellular organisms that lack cell walls Range from simple to complex Invertebrates- Do not have a backbone Worms Sponges Jelly Fish Mollusks Insects Vertebrates Have a backbone Fish Amphibians Reptiles Birds Mammals

A series of descriptions arranged in pairs that can be used to identify an unknown organism The chosen descriptions leads to another pair of descriptions or to the identification of the organism

A branched diagram that shows the relationships among organisms New characteristics appear before each branch

Classification- putting things into groups based on shared characteristics There have been many different ideas about how to classify living things.

Documents

eukarya slide

organism slide

nonflowering slide

euglena slide

branch slide

animalia slide

binomial nomenclature

multicellular organisms