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earthworm worksheet

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earthworm dissection worksheet answers

earthworm dissection lab report

The dissection of the earthworm is much improved when it follows the dissection of the roundworm Ascaris. Have students compare the structures of Ascaris and the Earthworm and explain how the additional features of the Earthworm make it more complex. Pre-lab Discussion: The earthworm belongs to a group of animals
Earthworm. 07.05.14. Name. Partner. Date. Hour. Earthworms (Lumbricus terrestris) are representative animals of the phylum Annelida. Examining external and internal structures of . Place the earthworm in the dissecting pan with its dorsal surface up. . (Hint: Use the segment numbers as a guide for locating the organs.).
Earthworm Dissection. Objectives: • Describe the appearance of various organs found in the earthworm. • Name the organs that make up various systems of the earthworm. Materials: Safety goggles, dissecting pins, gloves, forceps, lab apron, scissors, paper towel, scalpel, water, dissecting probe, preserved earthworm,
Lesson Plan: Earthworm Dissection. Background: The earthworm is an invertebrate in Dissection scissors. ? Scalpel. ? Eye protection. ? Protective clothing (apron, lab-coat). ? Gloves (latex free). ? Earthworm identification Handout. (One for use in lab, extra copy for reference). ? Earthworms. • Example biological suppliers.
EARTHWORM DISSECTION DIAGRAM. 1. Mouth – takes in food from soil. 2. Segments of Body – rings around body, body is segmented. 3. Pharynx – throat, passes food from mouth to esophagus. 4. Ventral Nerve Cord – like our spinal cord, carries nerve impulses. 5. Ventral Blood Vessel – major blood vessel
In this lab, the student will. 1. study the internal and external anatomy of the earthworm. 2. take care to see and determine the function of each suggested structure. 3. be prepared to identify structures and functions of earthworm anatomy. MATERIALS: preserved specimen, dissecting pan, scissors, probe, teasing needle,
Earthworm Dissection Lab Instructions. Pictures: Modern Biology, Holt. Objectives: • Describe the appearance of various organs found in the earthworm. • Name the organs that make up various systems of the earthworm. • Compare the organs of the earthworm with the organs in the human. Materials : Safety goggles
Pre-lab Discussion: The earthworm belongs to a group of animals called annelids (segmented worms). The body of an annelid is usually divided internally and externally into well-defined segments which may be separated from each other by membranous partitions. Except for the tail and head regions, all segments are
Obtain your lab tools and set up the dissecting microscope if it is available. * Observe external features including anterior, posterior, dorsal and ventral. Find the prostomium, anus, clitellum, setae, female genital pore, male genital pores, segments. Label these features on the outline sketch of the earthworm on the last page
External Anatomy. 1. Straighten the earthworm out across the dissection tray, placing the ventral side down. a. The ventral side appears flatter than the other sides of the earthworm. b. The dorsal side is the worm's rounded top. 2. Identify the anterior and posterior ends of the earthworm. a. The anterior end features the

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March 2018