31 Phylum Platyhelminthes Means “flat and wide worm”Live in sea and fresh waterSome are parasitesOne opening - food/wastesBilaterally symmetricalPlanaria, tapewormsStock Video of A planaria on plant stems
32 Phylum Nematoda Means “thread” One body opening for food and one for wastesTrichina worm, hookworm
33 Phylum Mollusca Means “soft bodied” Aquatic (gills), digestive tract Snails, octopus, clamsMollusks Video
34 Phylum Annelida Means “ringed” or segmented worm Digestive, nervous, circulatory systemsEarthworms and leeches
35 Phylum Arthropoda Means “jointed foot” Have an exoskeleton (exterior) Segmented body, lungs/tracheaeInsects (flies, wasps, beetles), crustaceans (lobster, shrimp), arachnids (spiders)
36 Phylum Echinodermata Means “spiny skinned” Starfish, sea urchin, brittle starSpiny skin and radial symmetry (5 arms coming out from center)
37 Phylum Chordata Means “having a chord” Have a backbone Have 9 systems (circulatory, nervous, skeletal, digestive, respiratory, etc.)Amphibians, Fish, Reptiles, Birds, Mammals
41 Classification Approximately 1.5 million species have so far been How do you organize all the 14 million species?Approximately1.5 million specieshave so far beenidentified and scientificallyDescribed.
56 Using Classification Keys Labs 1. Make a classification key for candyWork in lab groups of 4Write key on large paperEnd withidentification of single pieces of candy1.Bark on trunk smooth Bark on trunk rough 2.Bark mostly white Bark other colors
71 LINKS Tree of Life Web Project (includes interactive diagram) First click on DOMAINS: Archaea, Bacteria, or EukaryaThen click on KINGDOMSThen Scroll Down and click on the PHYLUM in the readingClick on CLASS in the reading
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