Earthworm Dissection Lab Objective: To learn the anatomy of the Earthworm through dissections. Materials Needed: -15 pins -Scalpel - Dissection tray - Hand lens - Earthworm - Forceps - Probe - Scissors Procedure: 1) Gather your materials; dissection kit‚ dissection tray‚ and the earthworm. 2) Lay the earthworm onto the dissection tray dorsal side up. 3) Place a pin through the side of the third segment from the mouth‚ and another pin through the side
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How Does Temperature Effect Earthworms? Introduction When one thinks of earthworms usually one thinks about slimy and nasty creatures that are only used for fishing. Wrong! If there were no worms on earth‚ farms and many plants could not be properly maintained. This paper will explain how important earthworms are to the earth and to our environment. In addition‚ this paper will cover the origin of an earthworm‚ the anatomy and other important characteristics. Origin The
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Earthworms are an organism which has been able to survive for millions of years due to the fact that they have been able to adapt to their surroundings in order to survive. Adaptation is an alternation or adjustment by which a species or individual improves its condition in relationship to its environment. Earthworms have adapted in many ways over the pass generations in order to improve reproduction‚ to get food and to improve their defenses. Earthworms live in moist soil which contains organic
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Meanings Of Locomotion In An Earthworm ← Locomotion means the act / power of moving from place to place‚ characteristic of the higher animals and some of the lower forms of plant life. ← Earthworm is any one of numerous annelid worms that burrow in soil and feed on soil nutrients and decaying organic matter or any worm of the genus Lumbricus and allied genera‚ found in damp soil. Taxonomy and Geographic Origins Of Earthworm ← L.Terestris : Europe and America. ← Angleworm/Fishworm
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Earthworm is the common name for the largest members of Oligochaeta (which is either a class or subclass depending on the author) in the phylum Annelida. In classical systems they were placed in the order Opisthopora‚ on the basis of the male pores opening posterior to the female pores‚ even though the internal male segments are anterior to the female. Theoretical cladistic studies have placed them instead in the suborder Lumbricina of the order Haplotaxida‚ but this may again soon change. Folk names
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An earthworm can grow only so long. A well-fed adult will depend on what kind of worm it is‚ how many segments it has‚ how old it is and how well fed it is. An Lumbricus terrestris will be from 90-300 millimeters long. A worm has no arms‚ legs or eyes. There are approximately 2‚700 different kinds of earthworms. Worms live where there is food‚ moisture‚ oxygen and a favorable temperature. If they don’t have these things‚ they go somewhere else. In one acre of land‚ there can be more than
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Earthworms are part of Phylum Annelida‚ Class Oligochaeta. They are classified in this phylum because their bodies are segmented and separated by an internal wall called septa. Each segment may or may not be different from the other depending on its function. Earthworms also classify with this phylum because it has a true coelom lined with a mesoderm and contain complex organ systems (Miller and Levine 694). Earthworms survive by feeding‚ circulating‚ respirating‚ excreting‚ reacting‚ moving‚ and
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Dissection lab In the past 3 weeks we have been dissecting animals of all different sorts. We dissected a worm‚ crayfish‚ grasshopper‚ and a perch (fish). In my conclusion I will explain the diet‚ habitat‚ and how these relate to the structure of these animals. First I am going to be talking about the worm. The Earthworms have setae in groups around or under their body. The setae‚ paired in groups on each segment‚ can be moved in and out to grip the ground or the walls of a burrow. Worms travel
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Article Summary Effects of earthworms on soil Earthworm is the common name for the largest members of Oligochaeta in the phylum Annelida. They combine bilateral symmetry and corresponding external and internal segmentation. This phylum consists of more than 17‚000 modern species of worms including earthworms‚ ragworms‚ and leeches. They are found in marine environments from tidal zones to hydrothermal vents‚ in fresh water‚ and in most terrestrial environments. They generally do not occur
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DISSECTION PROCEDURES Each class will be divided into dissection groups of 4 students. Your participation in the dissections will be assessed in your final grade at the end of the semester. These guidelines will be followed: 1. Participation: each member is expected to participate in all activities. Defined roles include: i. “Surgeon” – performs major work of dissection‚ identifies structures. ii. “Nurse” – assists the surgeon‚ cleans and ties structures
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