Earthworm Dissection Worksheet Pdf Lesson Plan Earthworm Dissection Background The earthworm is an invertebrate in the phylum Annelida it is a segmented worm The segments are distinguished on the exterior by noticeable band like rings internally the segments are separated by septa
2 Describe two ways earthworms help improve the quality of soil making it suitable for plants to grow Materials and Equipment A device with an internet connection Procedure Navigate to the oh worm worm dissection and answer the questions below Time marks from the video are water dissecting probe preserved earthworm hand lens dissection tray Purpose In this lab you will dissect an earthworm in order to observe the external and internal structures of earthworm anatomy Background Among the most familiar invertebrate animals are the earthworms members of the phylum Annelida
Earthworm Dissection Worksheet Pdf
Earthworm Dissection Worksheet Pdf
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Worm Dissection Lab I Purpose The purpose of this lab is to observe the structure and function of internal organs of earthworms II Materials III earthworm dissection tray pair of dissection 1 bent probe
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Earthworm Dissection Worksheet Pdf
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Earthworm Dissection Worksheet
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1 Work in groups of 4 students Carefully collect and sign out the equipment from the front desk Be cautious using the dissecting equipment Be aware of the sharp edge on the scalpel and points on the scissors and needle probe Only one person should be touching the earthworm at a time when tools are being used
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Background Earthworms are important helpers in the garden or field Their tunneling mixes up the soil and brings rich soil to the surface You can observe the organs of these tiny creatures by dissecting a preserved earthworm Our earthworm dissection guide will walk you through the entire process Safety Guidelines
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Dissection kit Dissection tray Pins Lumbricus terrestris Safety Put on a laboratory coat if desired Make sure you handle all specimens with rubber gloves Handle all dissection equipment carefully Clean all equipment when finished Lumbricus terrestris requires no special safety measures Pre Lab Questions 1
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Earthworm Dissection Lab Pre Dissection Lab Labeling Name Date Period Earthworms are invertebrates members of the phylum Annelida The word Annelida means quot ringed quot and refers to the series of rings or segments that make up the bodies of the members of this phylum other members of this phylum include bristleworms and leeches
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6 Locate the setae on the ventral side of the earthworm Run your finger over the setae Internal Observation of the Earthworm 7 Place the earthworm in the dissecting pan dorsal side up 8 Locate the clitellum and insert the tip of the scalpel about 3 cm posterior to the clitellum Carefully cut through the skin and muscles of the earthworm all
The dorsal vessel because it moves blood from the back to the front 3 The ventral vessel because it moves blood from front to back 4 An earthworm has two types of muscle to help it move through its environment Name the two types of muscle and how they help the earthworm move more efficiently Earthworm Dissection pdf Google Drive Sign in
Earthworm Dissection External Anatomy Examine your earthworm and determine the dorsal and ventral sides Locate the clitellum which is on the anterior end of the worm Locate the mouth of the worm on the far anterior end of the worm The openings toward the anterior of the worm are the sperm ducts
