Carolina Biological Supply Company. SQUID INK-QUIRY: Inquiry-Based Invertebrate Anatomy Through Squid Dissection
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1 Carolina Biological Supply Company SQUID INK-QUIRY: Inquiry-Based Invertebrate Anatomy Through Squid Dissection
2 Objectives Learn ways to incorporate inquiry methods in dissection laboratories Motivate, stimulate, and engage students while teaching animal diversity
3 Squid Dissection BioKit 15 double-injected squid 15 hand lenses Petri dishes (for examining dissected tissue) Dissection and Anatomy of the Squid lab manual Squid Anatomy poster Catalog no Teacher s manual with reproducible student guide
4 Carolina Dissection Materials Please use: Safety equipment (aprons, gloves, and safety glasses) Dissection tray Dissection kit
5 Squid: What Do You Know? Think Pair Share
6 Squid Classification Human Squid Domain: Eukarya Eukarya Kingdom: Animalia Animalia Phylum: Chordata Mollusca Class: Mammalia Cephalopoda Order: Primates Teuthida Family: Homindae Loliginidae Genus: Homo Loligo Species: Homo Loligopealei sapiens
7 Taxon: 3 Observable Traits Kingdom Animalia Phylum Mollusca 1. Eukaryote 1. Tentacles 2. Multicellular 2. Soft-bodied 3. Heterotroph 3. No external skeleton
8 Taxon: 3 Observable Traits Class Cephalopoda
9 Examples of Cephalopods Octopus Squid Cuttlefish Chambered nautilus Chitons (polyplacophorans)
10 Open Inquiry Ask any 3 questions about the squid. Ask 3 questions about the squid that can be answered by conducting a dissection.
11 Observable Adaptations for Survival List 3!
12 Traits Not Readily Observable
13 Type of Symmetry Radial or bilateral? Dorsal vs. ventral? Posterior vs. anterior? Explain your choices.
14 External Features Fins Dorsal view Mantle Collar Head Tentacles
15 The Head-Footed Mollusk The squid demonstrates a high degree of cephalization. The 2 large eyes: Lens Retina Photoreceptors Advantages of cephalization?
16 Means of Locomotion What obvious structures are used for locomotion? Are all the legs/tentacles alike? How are they adapted for movement?
17 Means of Locomotion What other purpose might the tentacles and arms serve? Other modes of moving through water?
18 Propulsion: What observable structures might be responsible for this rapid movement through the water? Based on the orientation of the excurrent siphon and Newtonian laws of motion, describe the direction of movement.
19 Take a Closer Look Record the number and length of each type of appendage. Look at the suction cups through a hand lens.
20 Tentacles vs. Arms Which are best designed for sensory functions? Why? Which are best designed for movement? Why? Record all your responses.
21 Open Wide...
22 What Type of Diet? Use the probe to explore the squid s mouth. Record your observations. Type of consumer?
23 The Buccal Mass Carefully cut open the buccal mass. Describe what you see.
24 Buccal Mass Attached to the esophagus
25 Evolutionary Relationships How might scientists account for a beak in this marine invertebrate?
26 Making the Incisions Ventral side up! Insert scissors into siphon.
27 Inside the Siphon How form fits function
28 In Search of the Original Ink-Jet
29 Squid s Ink Sac
30 Compare to Other Groups Based on all your observations... How do they differ? What might account for these differences?
31 Gender Determination Penis Male mantle cavity Anus
32 Anus and Ink Sac Ink sac Anus
33 Observing Internal Anatomy Locate the gills. Describe their appearance.
34 Circulation: Open or Closed System? Posterior venae cavae
35 Closed Circulatory System Branchial hearts
36 Precavae Circulatory System.
37 Circulatory System (single-injected squid) Anterior vena cava
38 Removing the Pen Visible from mantle cavity Internal shell made of chiton
39 The Squid Pen and Ink
40 Recording the Journal Entry...
41 Membrane-Lined Coelom
42 Points for Discussion Compare and contrast the organ systems studied in the squid with those of other invertebrates. Compare to vertebrates. Answer the questions posed throughout this inquiry.
43 3 Ways Systems Compare to Vertebrates Respiration Circulation
44 Internet Resources 009/12/03/squid-dissection/
45 We Can Meet Your Dissection Needs Top-quality specimens and supplies We Welcome the Opportunity to Exceed Your Expectations
46 Additional Resources from Carolina Carolina BioLab Virtual Lab Series Guide students through an interactive virtual dissection, teaching internal and external features
47 Carolina Free Resources Carolina offers many free resources to help support teachers.
48 Time to Clean Up... Carolina s Perfect Solution specimens Return to white bucket or take home for further study All other waste in the trash bags Dissecting pans and instruments Clean or take as gift Safety glasses and aprons Gift from Carolina Evaluation forms/info cards Complete, return to presenter
49 Evaluations: Share Your Thoughts! Scale = 1 to = Outstanding 9 = Above Average 8, 7 = Average 6, 5, 4 = Below Average 3, 2, 1 = Well Below Average Please provide comments!
50 Carolina Biological Supply Company Thank you for investing your time in our training program. For all of your classroom needs, check out our Web site, Enjoy the rest of the conference!
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