Protista c. Plantae d. Prokaryotae e. Bacteria ___6. Helminths are a. non pathogenic bacteria b. parasitic protozoa c. heterotrophic molds d. parasitic flatworms and roundworms ___7. Louis Pasteur accomplished all of the following except a. developed the first rabies vaccine b. developed the first disinfectant c. discovered how fermentation works d. developed a method to kill unwanted microorganisms
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above ___C__ 5. Which of the following combinations of phylum and desription is (are) incorrect? a. Nematoda-roundworms‚ pseudocoelomate. b. Echinodermata- bilateral and radial symmetry; coelom from archenteron. c. Porifera- gastrovascular cavity; coelom present. d. Cnidaria- radial symmetry; polyp and medusal body forms. e. Platyhelminthes- flatworms‚ gastrovascular cavity‚ acoelomate. ___A__ 6. The cockroach belongs in the __________while the grasshopper belongs in
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Regeneration of Planarians is the topic that will be explored and experimented. This experiment aims to prove that‚ flatworms placed into a warm environment will regenerate faster than flatworms in a cold environment because cold temperatures reduce metabolic rates which will slow the regeneration process. In order to prove this hypothesis flatworms were cut in half to induce regeneration. These flatworms were then separated into two containers‚ one was placed into a refrigerator and the other was kept at room
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because soft-bodied organisms do not fossilize well. Scientists believe that the first flatworm began to evolve 550 years ago. Platyhelminthes otherwise known as “flatworms” have a wide variety of species within the phylum and have positive and negative effects on those who interact with them. Some examples of Platyhelminthes include Tapeworms‚ Flukes and Planaria. The unifying characteristics of the flatworm include that they are mostly parasitic‚ have bilateral symmetry‚ their nervous system includes
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prior knowledge we possessed about the Hydra‚ Rotifer‚ Gammarus‚ and Planaria organisms to complete the lab. We knew that all of these small invertebrates have a freshwater habitat. Each organism differs in taxonomic levels from Genus to Species. We knew that the Hydra reproduces with one of two methods: 1) by “budding” which is an asexual method of reproduction and 2) by reproducing through a sexual sperm and egg process. We also knew that the Rotifer was a round worm with a split tail. We had to
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Eliminating River Blindness in Ecuador You notice a figure sitting on a porch in the North-Western region of Ecuador. As you approach it appears to be an elderly man but as you approach him you notice that he has features that you have never seen before. His skin looks as if it has been draped onto his skeletal frame causing him to lose all age indicators. Your eyes reach his and he does not make eye contact‚ a clear indication that he is blind. You approach the lizard man and ask his age‚ he
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Individuals become infected through ingesting or coming into contact with contaminated food‚ soil‚ or water. VIRUS PARASITES Flatworms: they have no body cavity‚ and no specialized circulatory and respiratory organs‚ which restricts them to flattened shapes that allow oxygen and nutrients to pass through their bodies by diffusion. Roundworms‚ aka. Nematodes: roundworms have tubular digestive systems with openings at both ends. Sources of microorganisms Requirements of microorganisms II. Normal
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1.1 & 1.2 To start this unit I will be discussing about the differences between bacteria‚ viruses‚ fungi and parasites. Bacteria: These are tiny microorganisms‚ they cannot be seen with the naked eye. They exist on virtually every living thing or object in the environment i.e. dirt‚ water‚ caves‚ trees‚ dead animals‚ and within everybody living on earth. Its nutrition is from its surroundings. We carry bacteria in the body‚ mainly in the intestines‚ on the genitalia or on the skin. Bacteria can
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parts. The organism attaches its tail-end to the ground and pulls itself forward using its head-end in order to tear itself into two parts. Then‚ each of these parts grows back the missing half‚ producing two new identical planaria. 3. A free-living flatworm ingests its food by opening its mouth‚ a cavity which allows food and water to pass. The food passes into the pharynx‚ a muscular tube near the mouth. The pharynx then pumps the food into the digestive cavity‚ called the gut. The cells in the gut
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The last insect that lives in the tropical rainforest is an army ant. Ants that live in the tropical rainforest will eat The second insect is the Goliath Spider. The Goliath Spider eats things that are larger than them. Such as frogs‚ rodents‚ bats‚ lizards and small snakes. They may eat a bird whenever they feel like it but it’s not a high chance that they will be eaten the most. The Goliath Spider doesn’t have any predators because of how much damage they can do to any type of species. The
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