June 8‚ 2009 -- Giant jellyfish like this one are taking over parts of the world’s oceans as overfishing and other human activities open windows of opportunity for them to prosper‚ say researchers. In this photo‚ a diver is attaching a sensor to track a monster Echizen jellyfish‚ which has a body almost 5 feet across‚ off the coast of northern Japan. Jellyfish are normally kept in check by fish‚ which eat small jellyfish and compete for jellyfish food such as zooplankton‚ researchers said. But
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two large subdivisions within the Protostomia _ Builds a cuticle‚ an outer layer of organic material that functions as its skeleton _ Cuticle is regularly shed (ecdysis) _ Have separate sexes and copulate Ecdysozoa Cuticle – nematode and arthropod Phylum Nematoda (15‚000 species) (Gr. nematos‚ thread) _ marine‚ freshwater‚ terrestial or parasitic _ long cylindrical body _ cuticle (cortical‚ matrix and fibrous) _ hydrostatic skeleton _ longitudinal muscles only _ pseudocoelom (false body cavity) _
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Biology 12 3rd Exam Reviewer Exercise 9: The Prokaryotes Prokaryotes are subdivided into archaebacteria and eubacteria. Archaebacteria - no peptidoglycan in cell wall Ex. Halob acterium Eubacteria - has peptidoglycan in cell wall Eubacteria - can be differentiated by Gram staining Gram positive: purple-blue‚ mostly peptidoglycan susceptible to penicillin Gram negative: pink-red‚ less peptidoglycan‚ has lipopolysaccharides‚ susceptible to EDTA Gram negative can be further differentiated into
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highest to the lowest) Example Kingdom Kingdom Animalia is the broadest category of all in the animal classification system. It includes every animal. Phylum (plural: Phyla) Phylum Chordata includes all animals of the Kingdom Animalia that have spinal cords. Class Class Mammalia includes all warm-blooded animals of the Phylum Chordata that have hair and feed their young with milk. Order Order Artiodactyla includes all animals of the Class Mammalia that have an even number
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The crab of Phylum Anthropoda is much more advanced and complex than the sponges of Phylum Porifera. One of the main differences that makes crabs more advanced is the fact that crabs have a body cavity which allows them to have different organ systems‚ this is called coelmate. A sponge does not posess a body cavity‚ which is called acolemate‚ but they do posess a Gastrovascular cavity. A Gastrovascular cavity has only one opening‚ the mouth/anus. Being a coelomate is more advanced because it allows
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DOLP- Fungi General Structure and Function: For many years‚ fungi were classified into the plantae kingdom because the two kingdoms seemed to be alike; but now‚ we know that they are all too different. In fact‚ the fungi kingdom is more closely related to the animalia kingdom. Some of the only notable similarities between the fungi and plantae kingdoms are that they are both made of eukaryotic cells‚ both immobile‚ both contain cell walls (although made of different material)‚ and both evolved
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------------------------------------------------- Annelid The annelids (also called "ringed worms")‚ formally called Annelida (from Latin anellus "little ring"[2])‚ are a large phylum of segmented worms‚ with over 22‚000 modern species including ragworms‚ earthworms and leeches. They are found in marine environments from tidal zones to hydrothermal vents‚ in freshwater‚ and in moist terrestrial environments.They are bilaterally symmetrical‚ triploblastic‚ coelomate organisms.They have parapodia
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Biodiversity study guide 1. Briefly describe how our species started to appreciate the biodiversity of the planet (in a geographical and historical context)? Through the concept of evolution‚ ecology‚ population‚ community and the environment. Species through different periods evolve physiologically and adapting to new environments. Animals who can’t live or survive in certain regions either migrate or die. Common ancestors often link to present day organisms showing biologically and different
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4) What is a prokaryote?[ ] 5) What is a eukaryote?[ ] 6) What has a more complicated structure: bacteria or protists? [ ] Part B: Click on the links below to learn about the three major groups of protists! ANIMALLIKE PROTISTS Phylum Sarcodina: Movement with Pseudopods 1) Go to the website: http://www.microscopyu.com/moviegallery/pondscum/amoeba/ Next to “Choose Video” click on the Amoeba link 1 and then link 2. Describe the motion that you see: [ ] 2) You will n
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protecting other organisms and appreciating their value or usefulness through the conduct of advocacy projects or activities. Learners will know: • Biological Classification • The major categories (taxa) of biological classification: kingdom‚ phylum‚ class‚ order‚ family‚ genus‚ and species Performance Standard: Learners conduct comprehensive‚ Community-based and innovative advocacy projects or activities to promote respect for and protection of other organisms. Essential Questions: Why do
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