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40 Cards in this Set
- Front
- Back
Phylum Porifera
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Porous body with a system of water canals; specialized cells, but no tissues or organs; intracellular digestion
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Class Calcarea
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Skeleton of calcium carbonate spicules (calcareous sponges - all small)
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Class Hexactinellida
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Skeleton of siliceous, 6-rayed spicules. (glass sponges)
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Class Demospongiae
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Skeleton of spongin fibers, siliceous spicules, both, or neither (marine bath sponges, freshwater sponges, carnivorous sponge)
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Phylum Cnidaria
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Radial symmetry and two tissue later construction; with a gastrovascular cavity and tentacles equipped with nematocysts.
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Class Hydrozoa
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usually with both polyp and medusa generations (Hyria, Obelia, Gonionemus)
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Class Scyphozoa
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Medusa predominant and polyp reduced or absent (Aurelia)
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Class Anthozoa
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Polyp only; no medusa (sea anemones, all corals, sea fan, sea whip, sea plume)
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triploblastic
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animals with three tissue layers
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Domain Eukarya
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Eukaryote organisms with a membrane-bound nucleus
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Phylum Platyhelminthes
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Flatworms; three tissue layers; incomplete digestive tract
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Class Turbellaria
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Free-living and commensal flatworms (Planaria)
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Class Trematoda
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Flukes. All are parasites (Clonorchis)
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Class Cestoda
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Tapeworms. All parasitic; ribbon-like body divided into proglottids (Dipylidium)
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Pseudocoelomates
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A fluid-filled body cavity lacking a complete mesodermal lining. A complete digestive system; cuticle; and cell constancy are typical
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Phylum Nematoda
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Roundworms. Free-living and parasitic; whip-like movements due to longitudinal muscles. (Ascaris, vinegar eel)
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Protostome coelomates:
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Mouth is formed from the blastopore of the gastrula; cleavage is determinate; in most the mesoderm splits to form the coelom (schizocoely)
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Phylum Mollusca
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Soft body consisting of anterior head, dorsal visceral mass and ventral foot; mantle secretes hard shell in most; radula present in some.
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Class Polyplacophora. chitons.
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Oval body; eight dorsal shell plates; broad foot; radula
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Class Bivalvia. clams, mussels, oysters, scallops
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Dorsally-hinged shell; filter feeders.
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Class Gastropoda. snails, slugs, whelks, conchs, sea hares.
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Body and shell coiled; broad foot; well-developed head; radula
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Class Cephalopoda. squid, cuttlefish, octopus, nautilus
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large head, foot modified for eight or more tentacles (arms) surrounding mouth; complex eye, similar to vertebrate eye.
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Phylum Annelida - segmented worms
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setae; large coelem; well-developed nervous, muscular, circulatory, digestive, and excretory systems
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Class Oligochaeta - earthworms and aquatic oligocheates.
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Head reduces; few setae per segment; clitellum; hermaphroditic; (Lumbricus)
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Class Polychaeta - clamworms and other marine polycheates
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Lateral appendages (parapods) with many setae per segment; well-developed head
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Class Hirudinea - leeches
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Blood-sucking external parasite; anterior and posterior suckers; lack setae; clitellum during reproductive season; hermaphroditic
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Phylum Onychophora
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velvet worms, closely linked to the arthropods and tartigrades, interesting lobe-like legs and slime glands
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Phylum Tardigrada
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water bears; closely related to onychophorans and arthropods; interesting ability to enter a suspended state called crytobiosis
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Phylum Arthropoda
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Segmented; serially homologous, jointed appendages; chitinous exoskeleton; highly developed nervous, sensory systems
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subphylum trilobita
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Extinct - armored arthropods, with a flat, ovoid, 3-part body
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Class Trilobita
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Fossil Trilobites
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Subphylum Crustacea
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Arthropods with 2 pair of antennae; mandibles; biramous appendages; gills.
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Class Crustacea.
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crayfish, lobster, crab, shrimp, isopods (pillbugs)
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Class Cladocera
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Waterflea
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Subphylum Hexopoda
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Single pair of antennae; mandibles; unbranched (uniramous) appendages; tracheae
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Class Insecta
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bees, beetles, wasps, grasshoppers, moths, butterflies, mantids, flies. pairs of legs, some have 1 or 2 pairs of wings. Single pair of antennae, mandibles; unbranched (uniramous) appendages; tracheae
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Subphylum Myriopoda
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.
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Class chilopoda
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centipedes - 1 pair of legs per segment
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Class Diplopoda
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millipedes - 2 pairs of legs per segment
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Subphylum Chelicerata
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Mouthparts are pincer-like chelicerae; no mandibles; no antennae; book lungs.
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