Term
| T/F The Phylum Porifera has no real tissues |
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Definition
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Term
| What type of symmetry does the phylum Porifera have? |
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Definition
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Term
| What are three things that make studying sponges significant? |
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Definition
1) Model for immunology
2) Ecologically important as a shelter for species
3) Commercial source of bath sponges |
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Term
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Definition
| the opening at the top of a sponge |
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Term
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Definition
| inner cavity or atrium of a sponge |
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Term
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Definition
| flattened squamous cells that form the outer layer of a sponge |
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Definition
| the "collar cells" that line the inner layer of a sponge. They are responsible for moving water and feeding. |
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Term
| What two structures help support sponge? |
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Definition
| Spicules form the skeleton of the sponge while spongin is the protein creating the body |
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Definition
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Definition
| the one central pore at top of sponge. Water flows out (excurrent) |
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Term
The three body types of sponges
Least complex-> most complex |
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Definition
| Asconoid, syconoid, leuconoid |
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Term
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Definition
| simple tube. small in size. Ex. Leucosolenia |
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Term
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Definition
| "folded" sponge body type. contains small inner openings called apopyles that connect choanocyte chambers. Ex. Sycon, Scypha, Grantia |
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Term
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Definition
| sponge body plan that is large and subdivided into seperate flagellated chambers. Silica spicules or no spicules at all. Ex. Spongilla and dried specimens. |
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Definition
| spicules of calcium carbonate, all three body types- ex. Leucosolenia and Sycon |
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Term
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Definition
| silicon spicules, spongin fibers, or both. Most marine, but some freshwater. Only leuconoid. |
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Definition
| sponges that develop young internally |
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Term
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Definition
| freshwater stage of reproduction. small tough balls that are meant to prevent dessication (drying out) |
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Definition
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Definition
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Term
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Definition
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Term
| The gemmules slide belongs to what organism? |
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Definition
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Term
| Euplectella: common name and class |
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Definition
| "Venus Flower Basket" Class: Hexactinellida |
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Term
| type of venus flower basket symbiosis? |
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Definition
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Term
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Definition
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Term
| Unique cells of cnidarians? |
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Definition
| Cnidocytes with special organelle, nematocysts |
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Term
| Number of Cnidarian body layes |
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Definition
| 3: Epidermis, Mesoglea, Endoderm |
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Term
| 2 body forms of Cnidarians |
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Definition
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Term
| Class hydrazoa's special tissue |
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Definition
| velum around the margin of the bell growing toward mouth to aid in propulsion |
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Term
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Definition
| living tube that connects some polyps and contains gastrovascular cavity |
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Term
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Definition
| chitinous covering of the coenosarc |
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Term
| Cnidarian Order: Limnomedusae |
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Definition
alternating generations, sexual medusa stage with velum and hollow tentacles
asexual polyp, Medusa have statocysts
EX: Craspedactusta, Gonionemus |
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Term
| Cnidarian Order Anthoathecate |
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Definition
athecate hydroids (lacking theca: a cup of perisarc over polyp)
Polyp stage solitary of in colonies. Medusa without statocysts
EX. Tubularia, Pennaria, Hyrdathinia, Hydra |
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Term
| Cnidaria Order Leptothecata |
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Definition
| thecate hydroids, polyps alllways in colonies. hydranths (feeding polyp)are set in hydrotheca EX. obelia, campanularia, Plumularia |
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Term
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Definition
polymorphic and pelagic
Ex. physalia (man of war, colony) |
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Term
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Definition
Jellyfish! Medusa dominant, no velum, mesoglea is cellular. all marine.
2 orders: semaeostomae and rhizostomae |
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Term
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Definition
| Order syphozoa. Oral arms and gonads on the folds of gastrodermis. Ex. Aurelia aurita. |
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Term
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Definition
| no tentacles around the bell. Oral arms are branched and fused. Filter feeders. Ex. Cassiopeioa (upside down jelly) |
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Term
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Definition
| Cube shape. Have a velum. VERY venomous (sea wasps) |
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Term
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Definition
| No Medusa stae. Mesoglea cellular. Gastrovascular cavity is partitioned by septa. Ex. Corals and anemones. |
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Term
| Class Anthozoa, subclass Hexacorallia |
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Definition
| Stony corals and anemones. Number of tentacles: 6. Polyps have more than 8 paired mesenteries. Typically in sybiosis with zooxanthellae dinoflaggellates. |
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Term
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Definition
| dinoflagellates that have a symbiotic relationship with Hexacorallia |
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Term
| Class Anthozoa, Subclass Octocorallia |
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Definition
| Soft corals, Polyps with 8 tentacles and 8 unpaired mesentaries. mostly colonial. |
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Term
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Definition
| any tissue that divides the coelom into sections |
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Term
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Definition
| still under radiata but showing biradial symmetry. Name comes from ctenes- ciliary comb shaped plates |
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Term
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Definition
| cilliary comb shaped plates located on 8 bands called comb rows |
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Term
| Phylum Ctenophora characteristics |
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Definition
| Solitary, no colonial; no polymorphism; do not have nematocysts; have collocytes to secrete sticky and catch prey |
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Term
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Definition
ctenophores with tentacles.
Order: Cydippida- ovoid body with 2 branched tentacles that retract into pouches. One specimen: Pleurobrachia. |
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Term
| Phylum Ctenohpora: Class Nuda |
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Definition
| tentacles absent. No examples in lab. |
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Term
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Definition
| really small specimen, most noted for its statocyst: a balancing organ |
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Term
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Definition
| protective chitin covering over the coenosarc |
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Term
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Definition
| connective tube filled with digestive enzymes in colonial polyps |
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Definition
| tentacles on the Pennaria that are small and near the mouth |
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Term
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Definition
| Large, curly tentacles on the Pennaria (sp) |
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Term
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Definition
| gas float in Pysalia that allows them to float at surface and participate in gas exchange. |
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Term
| Aurelia aurita life cycle |
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Definition
| planula, actinula, scyphistoma, strobila, ephyra, adult. |
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Term
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Definition
| Cephalization, Triploblastic, well developed organs. Aceolomate. No anus, No Segmentation, No circulatory or respiratory systems. |
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Term
| Phylum Platyhelminthes: Class Turbellaria |
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Definition
| About 3000, mostly free living, some parasitic or commensal. Single layer of epidermis, mostly ciliated. Produce rhabdoids. EX. Dugesia |
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Term
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Definition
| rod like structures in the epidermis of platyhelminthes |
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Term
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Definition
| Commonly called Flukes. Parasitic- ecto or endo parasitic. About 11,000 species. Have oral suckers. Can have very complex life cycles. |
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Term
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Definition
| Eggs> miracidium> sporocyst> redia> cercaria> metacerc |
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Term
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Definition
| 1100 species, All parasitic living on aquatic ectothermal vertebrates. Single larval stage- oncomircadium. No specimens. |
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Term
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Definition
| Tapeworms. 4000 species. lace a mouth and digestive tract. Endoparasitic exclusively. |
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Term
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Definition
| contracting a parasite from another animal (by nom noming tapeworms) |
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Term
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Definition
| the bit of the tape worm that contains proglottids and can break off. |
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