Flatworm Photo Sensory Behaviors Joshua Krystyniak BIO 218 Fall 2010 Lab: Wednesday 9 a.m. Introduction An organism’s environment can impact it in several different ways a few examples of this are temperature‚ lighting‚ and food sources. Some organisms have evolved certain structures to aid in the sensory of light and dark; one such example is certain members of the class Turbellaria have developed structures called photoreceptors (Pike et al. 1986). Certain
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Humans‚ Cnidarians‚ Flatworms‚ and Annelids The nervous system is one of the most important organ systems in the body. It is in charge of all of the things that happen within the body. Being responsible for receiving sensory input from internal and external stimuli‚ integrating and processing information‚ and generating output‚ it would be hard to survive without a nervous system; however‚ there are different types of nervous systems in various organisms. Humans‚ cnidarians‚ flatworms‚ and annelids all
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Investigation 1. Background 1.1. Biology and Life Cycle of Equine Parasitic Roundworms (Nematodes) All grazing horses are infected with nematodes according the American Association of Equine Practitioners (2013). However‚ the impact on the health of the horse depends on the level of infection. Understanding how these parasites interact with the environment and host is crucial to finding ways on how to control them. Nematodes form three life-cycle stages: eggs‚ larvae (which undergo four metamorphoses)
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Disscusion In this experiment‚ we are required to observe‚ explain‚ identify and recognize the phylum under Kingdom Animalia. The phylum that we need to identify was Phylum Porifera‚ Phylum Cnidaria‚ Phylum platyhelminthes‚ Phylum Nematoda‚ Phylum Rotifera‚ Phylum Mollusca‚ Phylum Arthropoda‚ Phylum Echinodermata‚ Subphylum Cephalochordata and Subphylum Vertebrata (Fishes). Phylum Porifera The characteristic of members of Phylum porifera include asymmetrical or radial symmetry body plan. There
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The classification of animals The Classification of animals : Animal Kingdom can be split up into main groups‚ vertebrates (with a backbone) and invertebrates (without a backbone). When you think of an animal‚ you usually think of something like a cat‚ a dog‚ a mouse‚ or a tiger. All told‚ around 800‚000 species have been identified in the Animal Kingdom -- most of them in the Arthropod phylum. In fact‚ some scientists believe that if we were to identify all species in the tropical rain forests
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AP Biology‚ Chapter 33 Invertebrates [by clade] SUMMARY INTRODUCTION PARAZOA Introduction Phylum Porifera: Sponges are sessile with porous bodies and choanocytes 1. Identify the parts of a sponge (including the spongocoel‚ porocyte‚ epidermis‚ choanocyte‚ mesohyl‚ amoebocyte‚ osculum‚ and spicule) and describe the function of each. a. Lifestyle: sessile‚ immobile filter feeders b. Water circulation i. Epidermis seals outside ii. Flagellated choanocytes lining
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Scarlett Williams Instructor: Kelli Roberts AIU Online Taxonomy Part Two: 1. Which phyla lack organs? What type of Symmetry do they have? The phyla that lack organs are: Sponges‚ Jellyfish‚ Roundworm and the flatworm. The sponges have symmetry and the jellyfish is radial. The roundworm and the flatworm are both bilateral symmetry. 2. List all of the Phyla that show cephalization. The Phyla that show cephalization are: Platyhelminthes‚ Nematode‚ Annelida‚ Mollusca‚ Arthropoda‚ and the Chordata
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Polypoid and medusoid. Polypoid- one side faces up while the other is connected to others of same species. Medusoid- upside down with mouth down. Medusoid. 9. Describe the anatomy of a free-living planarian‚ and how it differs from the parasitic flatworms. Pharynx‚ excretory system (flame cell)‚ bilateral symmetry 10. How can we get tapeworms? After a pig eats feces-contaminated food‚ the larvae are released. They burrow through the intestinal wall and travel in the bloodstream and lodge in the
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References: Adaptation. (2013). Retrieved from http://www.biologyreference.com/A-Ar/Adaptation.html Anatomy of Animals . (2012). Retrieved from http://universe-review.ca/R10-33-anatomy.htm#animals Roundworms. (2013). Retrieved from http://scienceforkids.kidipede.com/biology/animals/roundworms/
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this called? 9. What are synapomorphies? 10. Zygote _______ ________ _________ Growth 11. How many germ layers does a blastula have? 12. What happens during gastrulation? 13. What type of digestive structure do flatworms have? 14. What is an example of a pseudocoelomate organism? 15. What type of coelom formation goes on in protostomes? 16. Does the blastopore become the anus in protostomes or deuterstomes? 17. The neural crest develops from what
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