Dogfish Shark Dissection Introduction 1. What are two reasons why spiny dogfish are used for study in laboratories?
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1 Dogfish Shark Dissection Introduction 1. What are two reasons why spiny dogfish are used for study in laboratories? 2. Someone who studies fish is called an. 3. Sharks and fish belong to the Phylum a. Subphylum 4. Spiny dogfish belong to the class. 5. Bony fish regulate their buoyancy by using a 6. Sharks regulate their buoyancy by using. 7. When sharks stop moving, they and will due to the water pressure above it. 8. How does osmotic pressure control the movement of water into the cells of the shark? 9. Baby sharks are called 10. Dogfish shark go by the genus name and species name. 11. What is the method of fertilization in dogfish sharks? 12. Pups develop within the uterus and are born live, this is called. 13. How long is gestation? 14. Spiny dogfish belong to the class family. 15. What does the species name acanthias refer to? 16. Describe the habitat of spiny dogfish. 17. Describe the diet of the spiny dogfish. 18. What are the economic benefits and disruptions of the spiny dogfish? 19. Spiny dogfish have a life span of years. 20. Males reach sexual maturity at years and females at years. 21. How many pups are usually in a liter? Shark dissection study guide Bio 10 BCC Page 1 of 6
2 22. Review: Directional terms and body planes. Label the shark diagram below with the following terms: lateral, medial, proximal*, distal*, dorsal, ventral, anterior (cranial), posterior (caudal), superficial*, deep*, sagittal plane, transverse plane, frontal plane (note: I am asking for more labels than there are numbers for (*not numbered))(7-9 are planes) 23. Label the following external structures: rostrum, eyes, placoid scales, Ampulla de Lorenzini, gill slits, pectoral fins, dorsal fins (anterior and posterior), ventral, dorsal, caudal fin, anal fin, pelvic fin, spiracles, mouth, nares, nictating membrane, lateral line, caudal notch a. Draw in division lines and label: head (cranial), trunk, tail (caudal) Shark dissection study guide Bio 10 BCC Page 2 of 6
3 24. What is the importance of the lateral line system? 25. What are Ampullae de Lorenzini? Where are they found? Function? 26. Is your shark male of female? How do you know? 27. Label the diagram below, Shark dissection study guide Bio 10 BCC Page 3 of 6
4 28. Large amounts of is found in the shark liver. 29. What is the function of the oil in the liver? 30. What are the functions of the lateral lines? And Ampullae de Lorenzini? 31. What are the placoid scales on shark skin called? What are they related to? 32. Where are spiracles located? What is their function? 33. How many gill slits does a dogfish shark have? 34. Differentiate between the visceral and parietal peritoneum. Visceral peritoneum Parietal peritoneum 35. Describe the path of food as it enters the mouth and continues through the digestive (alimentary) canal through the cloaca. 36. Describe the internal structure of the stomach and the importance of rugae. 37. What does the term cloaca mean? 38. Name the sections of the stomach. Shark dissection study guide Bio 10 BCC Page 4 of 6
5 39. Describe the parts associated with a single brachial bar. 40. Describe how the gills function in respiration. 41. What type of blood flows through the heart of the shark? 42. Describe the path of blood through the shark heart. 43. How many chambers make up a sharks heart? Name them! 44. Make a diagram of the shark heart and label all the parts using arrows to show the flow of blood through the heart. 45. What structures make up the axial skeleton of the shark? 46. What structures make up the appendicular skeleton of the shark? 47. The shark skeleton is made entirely of 48. What is the name of the membrane that protects the sharks eye during eating? 49. The amount of light that enters the eye is controlled by the. 50. The Shark dissection study guide Bio 10 BCC Page 5 of 6
6 51. Name the major subdivisions and their locations in the brain 52. Where is the cerebrum located? 53. Where is the cerebellum located? 54. Where is the optic lobes located? 55. Why do you think it is important that the olfactory system is found in the forebrain of the shark? 56. What is the difference between sensory and motor neurons? 57. Sharks have two different colors on dorsal and ventral surfaces. This is called countershading. Why do you think this is important to sharks? Shark dissection study guide Bio 10 BCC Page 6 of 6
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