"Phylum cnidaria" Essays and Research Papers

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    Porifera

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    Porifera? Porifera is a phylum under the kingdom of Animalia. Porifera is the oldest phylum in this kingdom and has been around for the last 600 million years. The most common organism in this phylum is sponges. Porifera comes from the Latin words porus (pore) and ferre (bear)‚ meaning "pore-bearer". This is a reference to the numerous holes (pores) on the sponge ’s surface. Characteristics of Porifera  All organisms belonging to the phylum Porifera;  Have no definite symmetry  Have

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    Phylum Echinodermata

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    Phylum Echinodermata Introduction • Means “spiny skin” in Greek • Echinoderms are found at every ocean depth‚ from the intertidal zone to the abyssal zone. The phylum contains about 6500-7000 living species‚ making it the second-largest grouping of deuterostomes (a superphylum)‚ after the chordates. • Echinoderms are also the largest phylum that has no freshwater or terrestrial (land-based) representatives. Defining characteristics: • A complex series of fluid-filled canals

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    Phylum Chordata

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    Phylum Chordata • The chordates occupy the highest position in the food chain. • The name phylum was derived from the characteristic which all chordates share‚ the notochord – a long‚ elongated‚ and flexible cartilaginous structure that runs the entire length of the body. (Gr. noto = the back; chorde = string) Characteristics: • A dorsal nerve cord located above the notochord‚ it runs the entire length of the body. The nerve cord is a bundle of nerve fibers that connects the

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    sponge

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    NEWLY DISCOVERED DEEP-SEA MARINE CARNIVOROUS SPONGE Phylum Porifera is considered as a simplest form of animal consisting of sponges. Many families under this phylum have distinctive characteristics specifically feeding processes that help them become successful in terms of adaptation and survival despite of being simple and some are smaller compared to other marine organisms. A new species of carnivorous sponge (Phylum Porifera) have been discovered in the coast of Namibia particularly in the

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    cephalization 1.2: Unicellular and multicellular organization (Salient features with examples of phyla‚ subphyla and classes mentioned below) 1.2.1: Unicellular organization: Phylum Protozoa 1.2.2: Multicellular organization: Colonization level- Phylum Porifera 1.2.3: Multicellular organization: Division of labour (Cell diferentiation)Phylum Coelenterata 1.3 Triploblastic acoelomate and pseudocoelomate organization

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    Asexual Reproduction in Animals Group 3 Nina Bansil Kenneth Calabia Josef Franz Cruz I. Introduction Asexual reproduction is reproduction which does not involve meiosis‚ ploidy reduction‚ or fertilization. Only one parent is involved in asexual reproduction. A more stringent definition is agamogenesis which refers to reproduction without the fusion of gametes. Asexual reproduction is the primary form of reproduction for single-celled organisms such as the archaea‚ bacteria‚ and protists

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    Phylum: Arthropoda

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    The phylum Arthropoda is the largest and most varied in the animal kingdom. It includes well over one million described species. This represents approximately three-quarters of all known biological organisms‚ living or extinct. Countless arthropods remain undescribed (not yet named and studied)‚ and the actual number of living species could be as high as ten million or more. Some of the more well known arthropods include insects‚ crustaceans‚ and spiders‚ as well as the fossil trilobites. Arthropods

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    Watson Aquatic Science P.5 3/23/2013 Invertebrate Research – Stove Pipe Sponge If a diver or went snorkeling‚ it would be very lucky to find the Aplysina archeri‚ also known as the Stove Pipe Sponge. This sponge is in the Kingdom of Animalia‚ Phylum of Porifera‚ Class of Demosphongiae‚ Order of Verongida‚ Family of Aplysinidae‚ Genus of Aplysina‚ and Species of A. archeri. This sponge gets its name from its cylindrical shape and long tube like structure. It can grow up to 150 cm long with diameter

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    Biology Phylum Notes

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    Day 1: Biology of Animals Deuterostomes develop anus from blastopore Protostomes develop mouth from blastopore. Presentation: Overview of Prokaryotes‚ Protists‚ and Fungi I. Prokaryotes (ex. Bacteria) Characteristics -Unicellular -Small (0.5-5um) -Know shapes (ex. Spherical rod shaped and spiral) cocci‚ spirilla‚ bacilli -Cell wall‚ salt‚ peptidoglycan‚ Gram stain‚ virulence. Gram positive bacteria take up the Gram stain and turn purple‚ peptidoglycan traps crystal violet‚ very

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    Ch

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    Sponge Characteristics Kingdom Animalia Phylum porifera Multicellular Eukaryotic Simplest animals All aquatic Can be found in many colors and shapes Most are filter feeders Filter feeders- eat by straining particles from the water Do not have tissues Lack muscle and nerve cells Sessile- unable to move from where they are attatched Secrete roxing to: 1. Prevent other sponges from growing in their area 2. Protection from predators and paracites Sponge reproduction Reproduce both sexually and asexually

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