Anyone unfamiliar with the biology of the venomous Portuguese man-of-war would likely mistake it for a jellyfish. Not only is it not a jellyfish‚ it’s not even an "it‚" but a "they." The Portuguese man-of-war is a siphonophore‚ an animal made up of a colony of organisms working together. The man-of-war comprises four separate polyps. It gets its name from the uppermost polyp‚ a gas-filled bladder‚ or pneumatophore‚ which sits above the water and somewhat resembles an old warship at full sail.
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Cnidaria Hydra‚ Jellyfish‚ Coral‚ & Sea Anemones Phylum Cnidaria- Examples Sea Anemones and Corals - Anthozoa Hydra- Hydrozoa Jellyfish - Scyphozoa Ctenophores - non stinging Cnidarians; Comb Jelly Anatomy A. Polymorphism- Cnidarians have more than one body form: 1.Polyp 2. Medusa Polyp Form Tube with tentacles around the mouth Sessile Medusa Form Umbrella Shape Tentacles around mouth Motile‚ Free-swimming Tentacles Have nematocysts (stinging cells) coiled thread discharges
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IV. Index 1) Comprehensive Description of Class Hydrozoa 2) Morphological and Ultrastructural analysis of Turritopsis nutricula during life cycle reversal. + PDF 3) Turritopsis nutricula + PDF 4) Other articles about the immortal jellyfish (3 articles) I. Introduction Everyone in this world enters and leaves. Each one has the ability to make choices and decisions‚ to be happy and sad‚ and to live and die. In other words‚ we are living in a dynamic world. It has
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place oceans are in trouble‚ jellyfish are taking over. Jellyfish do well in warmer waters. Our carbon dioxide emissions are both warming the water and causing it to become corrosive. Warmer water -- even a fraction of a degree -- holds less oxygen than cooler water and shifts the balance of who survives and who perishes. In April 2012‚ Diablo was plunged into emergency shutdown because of jellyfish clogging up the seawater intake pipes for the cooling system. Jellyfish have caused many dozens of
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symmetry Some can move (motile) Have 2 major body forms: 1. Polyp 2. Medusa Polyp- cylindrical tubes with mouth and tentacles facing upward Ex: corals‚ sea anemones Fig 3-3 pg 663 Medusa- umbrella-shaped with their mouth and tentacles facing down Ex: jellyfish Fig 3-3 pg 663 Many species alternate between the 2 forms during their life cycle Cnidarian Reproduction May reproduce both asexually and sexually during its life cycle Polyps reproduce asexually by budding Produces genetically identical offspring
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| | Advantages and disadvantages of increasing tourism activity in different countries Top of Form |the leaf ninjaThreads: 9 |Jul 22‚ 2011‚ 02:20am #1 | |Posts: 44 | | |The costs of international
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Crystal jellyfish The Crystal jelly fish is a very unique marine animal. Known as the crystal jellyfish its scientific name is well known to be the Aquarium Victoria. The Aquaria Victoria is a saucer shaped Hydromedusa with a well developed velum‚ its size ranges within five to twelve centimeters in diameter. It has eighty or more narrow unbranched radial canals witch can extend to the margin of the bell. All tentacles extend from the margin of the bell‚ making the slender gonads run along most
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animals found exclusively in aquatic‚ mostly marine‚ environments. Cnidarians get their name from cnidocytes‚ which are special cells that carry stinging organelles. The corals‚ which are important reefbuilders‚ belong here‚ as do the sea anemones‚ jellyfish‚ sea pens‚ sea pansies and sea wasps. The names Coelenterata and Coelentera were once applied to the group‚ but those names included the Ctenophores‚comb jellies‚ and have been abandoned. Cnidarians are very evident in the fossil records‚ when they
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It was finished. At the local Kansas City Zoo there was a new exciting exhibit. Being told it was going to be for the majestic penguins. Not many foresaw the radiating shine of the Moon jellies swimming in their glimmering tank. Their unique resplendent glowing bodies propelled smoothly through the water. At sudden first glance these aquatic invertebrates seem like something from outer space. Though in reality they are a very common species of jellies that live in the temperate and tropical shallow
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GMO). The fish got the fluorescence from a red fluorescent protein from a sea anemone under the myosin light peptide 2 genes of zebra fish. The new green colored fish got is color from the extracted Green Fluorescent Protein that is taken from one jellyfish species called Aequorea victoria. These fish are beneficial for a lot of things including the economy‚ environment and the entertainment of the people. Some genetically modified organism has contributed to help a global or local problem that is
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