5.5:Classification Linnea Sandin Evans Period 5 June 6, 2008 Linnea Sandin Evans Period 5 June 6, 2008

Vocabulary Species identification Predictive value Evolutionary links Species Genus Nomenclature Binomial system Classification Taxon Key Species identification Predictive value Evolutionary links Species Genus Nomenclature Binomial system Classification Taxon Key

5.5.1:Outline the binomial system of nomenclature. Biologists use the binomial system of nomenclature to give every species an international name so that scientists around the world can refer to it. In the binomial nomenclature system, a species is classified first by its genus name, which is capitalized, then by its species name, which is not capitalized. The name of a species is always italicized. A model looks like this : Genus species. Ex: Pongo pygmaeus (Orangutan) Biologists use the binomial system of nomenclature to give every species an international name so that scientists around the world can refer to it. In the binomial nomenclature system, a species is classified first by its genus name, which is capitalized, then by its species name, which is not capitalized. The name of a species is always italicized. A model looks like this : Genus species. Ex: Pongo pygmaeus (Orangutan)

5.5.2:List seven levels in the heirarchy of taxa using an example from two different kingdoms for each level. LevelBlue WhaleCoast Redwood KingdomAnimaliaPlantae PhylumChordataConiferophyta ClassMammaliaPinopsida OrderCetaceaPinales FamilyBalaenop- teridae Taxodiaceae GenusBalaenopteraSequoia SpeciesMusculusSempervirens

5.5.2 Con’t An easy way to remember the order of the levels: –Kings –Play –Chess –On –Fiber –Glass –Stools An easy way to remember the order of the levels: –Kings –Play –Chess –On –Fiber –Glass –Stools

5.5.3:Distinguish between the following phyla of plants, using simple external recognition features: bryophyta, filicinophyta, coniferophyta and angiospermophyta. Bryophytans (mosses) have tissues and enclosed reproductive systems. They have no flowers or seeds. Filicinophytans (ferns) are much like bryophyta, but they have vascular systems. They have large, conspicuous leaves with short, erect stems. Bryophytans (mosses) have tissues and enclosed reproductive systems. They have no flowers or seeds. Filicinophytans (ferns) are much like bryophyta, but they have vascular systems. They have large, conspicuous leaves with short, erect stems.

5.5.3 Con’t Coniferophytans grow as trees or shrubs. They seed plants that produce woody stems. Angiospermo- phytans are flowering plants. Coniferophytans grow as trees or shrubs. They seed plants that produce woody stems. Angiospermo- phytans are flowering plants.

5.5.4:Distinguish between the following phyla of animals, using simple external recognition features: porifera, cnidaria, platyhelminthes, annelida, mollusca, and arthropoda. Poriferans (sponges) don’t have mouths, but they have tiny pores on their outer walls through which they draw water. Cnidarians are found in aquatic, often marine, environments and have tentacles. Poriferans (sponges) don’t have mouths, but they have tiny pores on their outer walls through which they draw water. Cnidarians are found in aquatic, often marine, environments and have tentacles.

5.5.4 Con’t Platyhelminthes (flatworms) have no body cavity except for a gut and have no anus. Annelids are segmented worms that usually have some number of bristles. Platyhelminthes (flatworms) have no body cavity except for a gut and have no anus. Annelids are segmented worms that usually have some number of bristles.

5.5.4 Con’t Molluscs are usually found in marine environments. Some are bilaterally symmetric and are usually divided between a body and a head. Anthropods include organisms like spiders and insects. They have bilaterally symmetrical bodies that are very clearly segmented. Molluscs are usually found in marine environments. Some are bilaterally symmetric and are usually divided between a body and a head. Anthropods include organisms like spiders and insects. They have bilaterally symmetrical bodies that are very clearly segmented.

5.5.5:Apply and design a key for a group of up to eight organisms.

Campbell Book References 5.5.1: Page : Page : Page : Pgae : Page : Page : Page : Pgae 493