AP Biology List of animals  Let ’ s play a game! In order to win, the class must name at least one animal in each of 9 columns. Easy right? We ’ ll see……..

AP Biology Porifera Cnidarians Platyhelminthes Nematodes Mollusca Annelida Arthropods Echinoderm Chordate

AP Biology Poriferasponges CnidariansJelly fish, sea Anemonecoral PlatyhelminthesFlatworms NematodesRound worms (hookworms, Pinworms, nematodes) MolluscaMullusks AnnelidaEarth worm ArthropodsInsectsspiders EchinodermStarfish, sea cucumbersSea urchins ChordateBirds, reptiles, fishAmphibians, mammals

AP Biology Domain Bacteria Domain Archaea Domain Eukarya Common ancestor Kingdom: Animals Domain Eukarya

AP Biology Animal Characteristics  Heterotrophs  must ingest others for nutrients  Multicellular  complex bodies  No cell walls  allows active movement  Sexual reproduction  no alternation of generations  no haploid gametophyte

AP Biology choanoflagellate Trends in Animal Evolution

AP Biology Early Embryonic Development

AP Biology Porifera Cnidaria Platyhelminthes spongesjellyfishflatworms roundworms Nematoda MolluscaArthropodsChordata AnnelidaEchinoderm mollusks multicellularity Ancestral Protist tissues bilateral symmetry body cavity segmentation Animal Evolution coelom starfishvertebrates endoskeleton segmented worms insects spiders backbone

AP Biology  3 body layers  ectoderm  mesoderm  endoderm Body Cavity How much is the digestive tract separated from the rest of the body? ectoderm mesoderm endoderm ectoderm mesoderm endoderm mesoderm endoderm acoelomate pseudocoelomate coelomate coelom cavity pseudocoel

AP Biology Animal Phyla

AP Biology Symmetry

Invertebrate: Porifera  Sponges  no distinct tissues or organs  do have specialized cells  no symmetry  sessile (as adults) food taken into each cell by endocytosis

AP Biology Invertebrate: Cnidaria  Jellyfish, hydra, sea anemone, coral  tissues, but no organs  two cell layers  radial symmetry  predators  tentacles surround gut opening  extracellular digestion  release enzymes into gut cavity link

AP Biology hydra stinging cell with nematocyst trigger discharged nematocyst undischarged nematocyst tentacles mouth sensory cell stinging cell Stinging cells of Cnidarians

AP Biology Triploblastic: Eumetazoa-Bilateria Protostome vs. Deuterostome

AP Biology Invertebrate: Platyhelminthes ectoderm mesoderm endoderm  Flatworms  tapeworm, planaria  mostly parasitic  bilaterally symmetrical  allows high level of specialization within parts of the body  now have a mouth at one end & an anus at the other! link

AP Biology Invertebrate: Nematoda  Roundworms  bilaterally symmetrical  have both mouth & anus  well-developed digestive system  many are parasitic  hookworm C. elegans Oh no you don’t!

AP Biology Invertebrate: Mollusca  Mollusks  clams, snails, squid  bilaterally symmetrical (with exceptions)  soft bodies, mostly protected by hard shells  true coelem I am NOT just a vehicle for butter…

AP Biology Snail poetry Snail employment Practical Applications of Snails ?

AP Biology Invertebrate: Annelida  Segmented worms  earthworms, leeches  segments are not specialized  bilaterally symmetrical  true coelem fan wormleech

AP Biology

Invertebrate: Arthropoda  Spiders, insects, crustaceans  most successful animal phylum  bilaterally symmetrical  segmented  allows jointed appendages  exoskeleton  chitin + protein

AP Biology

Arthropod groups insects 6 legs, 3 body parts crustaceans gills, 2 pairs antennae crab, lobster, barnacles, shrmp arachnids 8 legs, 2 body parts spiders, ticks, scorpions

AP Biology Invertebrate: Echinodermata  Starfish, sea urchins, sea cucumber  radially symmetrical  spiny exoskeleton

AP Biology Deuterostomia/Coelomate: Echinodermata You guys better start studying!

AP Biology Invertebrate quick check…  Which group includes snails, clams, and squid?  Which group is the sponges?  Which are the flatworms? …segmented worms? …roundworms?  Which group has jointed appendages & an exoskeleton?  Which two groups are radially symmetrical?  Which group has no symmetry? Invertebrates: Porifera, Cnidaria, Platyhelminthes, Nematoda, Annelida, Mollusca, Arthropoda, Echinodermata

AP Biology That’s the buzz! Any Questions?