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37 Cards in this Set
- Front
- Back
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Sponge anatomy |
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Sponge cell layers |
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Sponge specialized cell types |
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Sponge growth forms |
Asconoid Syconoid (choanocyte canal/chamber) Leuconoid |
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Spicule types |
Glass: silica Calcium carbonate: Crystals Spongin: proteins |
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What do sponges lack |
Organs Nervous system Respiratory system Digestive system Excretory system Mouth Angus Appendages Major body axes Symmetry |
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Sponge life histories |
Broadcast spawning |
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Sponge larval development |
7 different types Parenchymella larva: little furry football |
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4 major sponge diversity |
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Physical characteristics of the different sponges |
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Placozoa |
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Cnidaria |
Colonial Calcified skeletons Marine and freshwater Polyp and medusa forms Radial symmetry Anemones, jellyfish, corals Diploblastic GFPs |
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Cnidaria polyp form |
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Cnidaria medusa form |
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Cnidaria tissue layers |
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What do cnidarians not have |
Respiratory system Circulatory system Anus Central nervous system |
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Nematocysts |
Cnidocil: trigger Tubule: venom needle Operculum: opening |
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What are the cells containing the nematocyst called |
Cnidocytes |
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Cnidarian nervous system |
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How do cnidarians move |
Similar to muscle cells |
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Cnidarian symbiosis with what? |
Gastrodermal cells: line the stomach Zooxanthella: algal cells that are in the gastrodermal cells Algal cells leak sugar, coral's N and P is fertilizer for the algae |
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4 main kinds of cnidarians |
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Examples of octocoralia and characteristics |
Sea whips, sea fans, sea pens, soft corals Colonial Pinnate tentacles (8) Internal skeletons, protein or CaCO3 sclerites |
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Hexacoralia examples and characteristics |
Corals (colonial), anemones (solitary) External CaCO3 skeleton |
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Anthazoan anatomy |
Mesentaries: sheets of tissue that connect outer wall to inner tube. Where reproduction happens, involved in feeding |
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Anthazoan life history |
Gonochoristic GonochoristicBroadcast spawning No medusa stage |
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Hydrozoa examples and characteristics |
Hydroids and siphonophores Hydroids: Specialized polyp forms and functions Siphonophores: modified polypoid and medusioid forms within a single stage |
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Hydroids specialized polyps |
Dactylozooid: defense Gonozooid: repro Gastrozooids: feeding |
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Siphonophores modified forms |
Nectophores: modified medusoid structure |
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Hydrozoan life history |
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Scyphozoa examples and characteristics |
True jellyfish Sensory organs |
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Scyphozoa sensory organs |
Called rhopalium Oscellus: "eye" light sensitive cells but not image forming Statocyst: detects orientation of body in water, CaCO3 chunk that moves around |
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Scyphozoa life history |
Strobilation (asexual repro) Scyphistoma: very reduced polypoid form Ephyra: free swimming asexual offspring |
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Cubozoa examples and characteristics |
Sea wasps, box jellyfish Most sophisticated of cniderians |
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Cubozoan rhopalia |
Ocelli: image-forming eye with cornea, lens, and retina |
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Cnidarian body plans and |
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Platyhelminthes characteristics |
Bilateral symmetry Acoelomate triploblasts Protostomes (mouth first) Spiral cleavage Lophotrochozoa (no molting) Cephalized Circular and longitudinal muscle layers |
