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27 Cards in this Set
- Front
- Back
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invertebrates
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animals that lack backbone
95% of animals |
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Porifera
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part of Metazoa, no tissues, specialized cells called collar cells and amebocytes, suspension feeders
spongel and osculum |
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Animals with tissues
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Eumetazoa
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Radial symmetry: Cnidarians
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polyp or medusa
dioblastic characterized by cnidocytes or stinging cells Hydrozoans-Obelia, hydra, portuguese manowar, colonial Scyphozoans-medusa dominant, true jellies cubozoans-box jellies, highly toxic anthozoans-sea anemone |
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Genetic Data: Lophotrochozoans
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Characterized by cilliated tenticles at some stage in its life.
-Platyhelmenithes -Rotifera -Ectoprocta -Brachiopoda |
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Platyhelmentes(proterostome, lophotrochozoa)
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Trioploblasts, acoelomates, gas exchange though skin, have cerecral ganglia, gastrovascular cavity, eyespots
*Planarian-predator scavenger, eyespots *Turbellaria- marine, have eye spots *monogeneans&tramatodes-flukes *Cestoidea/ rhabditophorans-tape worms, parasitic |
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Rotifers(proterostome, lophotrochozoa)
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*Digestive tube with two openings=alimentary canal=mouth+anus
*psudocoelom *parthenogenisis |
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Ectoprocts (proterostome, lophotrochozoa)
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*Colonial animal
*lophophorates=cilliates corona around mouth *suspension feed *coelom |
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Brachiopods (proterostome, lophotrochozoa)
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*clam-like, split dorsal and ventral
*lophophorates=cilliates corona around mouth *suspension feed *coelom |
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Molluscs (proterostome, lophotrochozoa)
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*muscular foot
*Visceral mass-contains most organs *Mantle-secretes shell *mantle cavity- houses gills *Radula-organ to scrape food *Chitons, Gastropods, cephalopods, bivales |
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Chitons (Proterostome, Lophotrochozoa,Molluscs)
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eight dorsal plates
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Gastropods (Proterostome, Lophotrochozoa,Molluscs)
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*torsion= 180 rotation of visceral mass so anus is above mouth
*snails, limpets, abalone * herbivore, predator |
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Bivalves (Proterostome, Lophotrochozoa,Molluscs)
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*hinged halves at midline
* adductor muscles *breath though mantle gas exchane *filter feeders |
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Cephalopods (Proterostome, Lophotrochozoa,Molluscs)
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*reduced shell to pen
*ammonites=shelled cephalopods *closed circulatory system=blood separate from body fluid |
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Annelids (proterostome, lophotrochozoa)
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*coelomates
* segmented worms *Polychates, Oligochaetes(earthworms, leeches) |
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Polychates (proterostome, lophotrochozoa, Annelida)
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*many parapodia with bunched chaetae
*chaetae=bristles made of chiton |
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Oligochaetes (proterostome, lophotrochozoa, Annelida)
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*'few hairs'
*Earthworms-alimentary canal, closed circulatory system *leeches-parasitic |
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Ecdysozoans (proterostome)
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*tough external coat = cuticle
* go though ecdysts = molting *Nenatodes, anthropodia |
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Nematoda (proterostome, Ecdysozoa)
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*roundworms, hook worms
*no segmentation *diecious (m/f separate) *alimentary canal *no circulatory system *pseudocoelom |
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Anthropods (proterostome, Ecdysozoa)
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*segmented body
*coelomates *hard exoskeleton *jointed appendages *specialization of repetitive segments *open circulatory system *gas exchange though trachea *head, thorax, abdomen OR cephalothorax, abdomen |
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Chelicerates (proterostome, ecdysozoa, anthropodia)
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*chelicerae= pincer/ fange apendages
*cephalothorax and abdomen *no antennae, simple eyes *six pair appendages, 4 pair walking legs *pedipalps=sensing/feeding/reproduction appendages *booklungs *horseshoe crab,arachnids, scorpions,eurypterids, ticks, mites |
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Myriapods (proterostome, ecdysozoa, anthropodia)
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*milipedes and centipedes
*terrestrial *3 mandibles=modified appendages as mouthparts *antennae *milipedes=hervivores, two pairs for each segment *centipedes= carnivores, one pair for each segment, venomous |
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Hexapoda (proterostome, ecdysozoa, anthropodia)
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*Insects
*flight *Dorsal artery(dorsal) *cerebral ganglion and nerve cord(ventral) *six pair, 3 pair legs *head thorax abdomen *communication |
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complete metamorphosis
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larval stage looks completely different from adult stage
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incomplete metamorphosis
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larval stage resembles adults
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Crustaceans (proterostome, ecdysozoa, anthropodia)
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*isopods, decapods, copepods
*CaCO3 shell |
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Echinoderms (Deuterostomata)
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*Radial symmetry
*coelomates *water vascular system *tube feet * asterodiea-sea stars *Echinodea-sea urchins *Crinoidea-sea lilies *holothuroidea- sea cucumbers |
