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62 Cards in this Set
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Cnidaria |
Jellyfish, corals, anemones |
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Cnidocytes |
Stinging cells |
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Nematocyst |
Harpoon on cnidoytes |
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Characteristic of cnidaria |
All have cnidocytes. Hydrostatic skeleton. |
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Define eumatozoa |
Have true tissues. Cnidaria. |
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Do cnidarids have coeloms |
No. Acoelomates |
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Symmetry of cnidaria |
Radial |
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Body form of cnidaria |
Two of them. Polyp and Medusa |
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Number of openings in body cavity |
One |
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Organs in cnidaria |
No organ systems. Do have nerve receptors |
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Diet of cnidaria |
Carnivore |
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Germ layers in cnidaria |
Diploblastic |
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Gastrodermis |
Digests food and secretes enzymes |
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Use of ectoderm |
Protection and structure |
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Nerve net |
In animals with radial symmetry |
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Solitary corals |
Individual polyps, usually one mouth, sessile or benthic |
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Colonial corals |
Polyps joined together, sessile, single mouth |
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Polyp vs Medusa body form |
Polyp cylindrical with tentacle-surrounded mouth up. Medusa free-swimming with bell shaped body and mouth down. Tentacles on edge of bell. |
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Polyp reproduction |
Corals sexual, jellyfish asexual. Asexual includes budding or splitting of polyp |
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Reproduction of medusa |
Sexual |
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Nematocyst |
Contains folded sensor filled with venom. When stimulated, capsule ejects thread with force, barb penetrates prey. |
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Zooxanthellae |
Sibge-celled algae that live in tissues of animals. Mutualistic. Provides food to coral (products of photosynthesis) |
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Hydrozoa water type, polyp or Medusa stage, movement and nematocyst. |
Class. Marine predators. Can move. Solitary polyp only, gasto cavity like sponges. Not sessile. Nematocyst either penetrates and injects poison, or recoils and entangles prey |
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Hydrozoa reproduction. |
Sexual and asexual |
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Example of a hydrozoa and some characteristics |
Portuguese man o war. Dactylozooid, gas filled float, gastrozooid, gonozooid |
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Dactylozooid |
Tentacle polyps. Portuguese man o war |
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Gonozooid |
Reproductive polyps |
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Gastrozooid |
Feeding polyps |
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Scyphozoid |
Jellyfish. |
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Different types of polyp |
Dactylozooid Gastrozooid Gonozooid |
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Scyphozoid water type, polyp or Medusa stage, movement and nematocyst. |
Jellyfish. Marine, both polyp and Medusa in most, not sessile. |
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What has four gastric pouches |
Scyphozoid. |
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What has a rhopalium |
Scyphozoid |
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Define rhopalium |
Sense organ |
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Cubozoa example |
Class. Includes box jellyfish. |
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Cubozoa water type, polyp or Medusa stage, movement and nematocyst. |
Marine, Medusa stage dominant, not sessile, fatal nematocyst |
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Anthozoa examples |
Class. Includes two orders: Hexacorallia Octocorallia Symbiotic with zooxanthellae |
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Anthozoa water type, polyp or Medusa stage, movement and nematocyst. |
Marine, polyp only, sessile, predator. |
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Hexacorallia |
Order of Anthozoa class. Anemones and hard corals. Calcified exoskeleton |
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Octocorallia |
Order in anthozoa class. Includes soft corals |
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Hexacorallia water type, polyp or Medusa stage, movement and nematocyst. |
Marine, polyp, attached by pedal disc, predator. |
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Reproduction of hexacorallia |
Males and females release gametes Or Brooder Or Budding Or Pedal laceration Or Transverse Fission |
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Define brooder |
Male releases sperm to be fertilized in female |
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Define budding |
Mother produces ring of tentacles break off, form new anemone |
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Define pedal laceration |
Piece of foot is severed and grows into new individual |
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Define transverse Fission |
Polyp separate into 2 halves which crawl away grow. Clones |
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Number of island on great barrier reef |
900 |
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How do coral reefs form |
Egg and sperm, fertilization, planula, substrate, polyp, secrete calcium carbonate, polyps divide asexually and form colonies |
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Define planula |
Free swimming larvae |
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Mouth of a hard coral |
Ingests food as well as excretes waste |
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Scleractinia |
Stony (hard) corals. Reef builders. |
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Scleractinia water type, polyp or Medusa stage, movement and nematocyst. |
Marine, polyp stage only, sessile, carnivore. |
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Number of tentacles in scleractinia |
Multiples of six |
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Octocorallia number of tentacles |
8 feathery tentacles |
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Octocorallia water type, polyp or Medusa stage, movement and nematocyst. |
Marine, no Medusa, sessile, predator. |
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Staurozoa water type, polyp or Medusa stage, movement and nematocyst. |
Marine, only Medusa, sessile, predator. |
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Staurozoa reproduction. |
Sexual, gamete release. |
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Which class has panua larvae that crawls instead of walks |
Staurozoa class |
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Environmental concerns of cnidaria |
Stinging swimmers, tourism, fisheries, aquaculture |
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Which cnidarian has sdeonssf venom in animal kingdom |
Box jellyfish |
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