lab

Pre-Lab Questions Identify the four major characteristics of chordates. List ways in which invertebrates compensate for not having a spine. Experiment 1: Symmetry in Common Objects Images Draw the lines of symmetry on each of the objects below. Post-Lab Questions Identify the type of symmetry displayed for each item. Then, indicate how you came to your conclusion: Petri Dish: Funnel: Test Tube Rack: Wash Bottle with Curved Straw: Graduated Cylinder: Tongs: Experiment 2: Creating a Phylum Key Data Tables Table 2: Phylum Taxonomic Key Prorifera Cnideria Platyhelminthes Annelida Arthropoda Mollusca Echinodermata Chordata Post-Lab Questions Were any of the features used in more than one phyla? If so, give an example of an organism from each phyla that shares the feature. List three features from Table 1 that describe a Monarch butterfly (Danaus plexippus). Using the features you listed, determine what phyla it is classified in. Experiment 3: Taxonomy Organism Images Organism A Organism B Organism C Organism D Organism E Organism F Data Sheet Identify which phylum each of the organisms belongs in. List the criteria used in your determination in the space below. Organism A Phylum: Criteria: Organism B Phylum: Criteria: Organism C Phylum: Criteria: Organism D Phylum: Criteria: Organism E Phylum: Criteria: Organism F Phylum: Criteria: Experiment 4: Owl Pellet Dissection Results Tables Table 3: Owl Pellet Data Pellet Characteristics Observations Pellet Length (cm): Pellet Width (cm): Physical Observation: Table 4: Owl Pellet Contents Bone Animal Source Number of Bones Skull Jaw Scapula Rib Vertebrae Hindlimb Forelimb Pelvic Bone Post-Lab Questions What did you find in your owl pellet? What have you learned about the ecosystem in which the owl lives? What can you infer about the nature of the community in which the owl lives? How can scientists use owl pellets to study small mammals in a specific ecosystem? Other birds of prey produce pellets as well, and the contents are dictated by where the bird lives. What would you expect to find in the pellet from a shorebird, such as a gull? Experiment 5: Invertebrate Dissection Post-Lab Questions What are some common animal traits that a starfish does not possess? Explain why the starfish is not classified as a vertebrate species. Experiment 6: Vertebrate Dissection Result Tables Table 5: Grassfrog Measurement and Analysis Frog Length Small Intestine Length Stomach Contents Post-Lab Questions Classify the specimen you just dissected into correct taxons, starting with kingdom and ending with species. Describe the appearance of five organs you found in the frog.