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30 Cards in this Set
- Front
- Back
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Porifera
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Sponges, no apparent symmetry, Sessile
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Cnidarian
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Radial symmetry, tentacles with stinging cells
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Cnidarian Body Form
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Sessile polyp- tubular body w/ tentacles
Motile Medusa- Umbrella-shaped w/ mouth under tentacles |
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Mollusca
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100,000 species living on land, in water and in oceans
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Mollusca
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Gastropods: snails and slugs
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Molllusca
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Bivalve Molluscs: Clams, scallops, oysters, mussels
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Mollusca
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Cephalopods: Nautilus, squid, octopus
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Gastropods
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Snails and slugs: "belly foot"
3/4 of all molluscs |
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Bivalves
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Clams, scallops, oysters, and mussels.
shell that clamps together |
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Cephalopds
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Octopus, squid, nautilus
Tentacles for feeding, locomotion and defense |
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Flatworms
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simplest bilateral animal
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Flatworms
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Parasites, free living in marine, freshwater or damp habitats
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Platyhelminthes
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4 classes, planaria, fish flukes, tapeworms, flukes parasitic
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Nematoda
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Roundworms, cylindrical in shape, longitudinal muscles, important decomposer
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Annelids
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Body segmentation, a coelom, two openings, mouth and anus
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3 groups of Annelids
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Earthworms, marine worms, leeches
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Oligochaetes
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Earthworms, "few bristles"bulk feeders, consume soil and organic material
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Polychaetes
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Marine worms, "many bristles"
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Hirudinea
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Leeches
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Arthropoda
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Named for their jointed appendages, Very diverse and successful, can be found all over the world
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General characteristics of Arthropods
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Segmented animals with specialized segments and appendages, Exoskeleton provides protection
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Arachnids
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spiders, scorpions, ticks and mites, live on land, four pairs of legs and feeding appendages
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Crustacean
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All aquatic,include crabs, lobsters, crayfish, shrimps and barnacles multiple pairs of appendages
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Millpedes
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Eat decaying plany matter, two pairs of short legs per body segment
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Centipedes
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Are terrestrial carnivores with poison claws, one pair of short legs per body segment
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Insecta
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More species of insects than all other animal species combined, wings crucial to success
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Insecta body plan
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Three part body, head, thorax, abdomen
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Echinodermata
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Lack body segments, radial symmetry, have endoskeleton
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Chordate
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Includes a dorsal, a notochord, pharyngeal slits and post anal tail
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Chordate
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includes amphibians, reptiles, vertebrates, turtles tortoises and terrapins, lizards and snakes, crocodiles, dinosaurs and birds
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