2. Jeopardy $100Jaw dropping in a bone yard And now, for something completelydifferent… $200 $300 $400 $500 $400 $300 $200 $100 $500 $400 $300 $200 $100 $500 $400 $300 $200 $100 $500 $400 $300 $200 $100 Final Jeopardy Final Jeopardy

3. 1 - $100 Allows skeleton & muscle development by providing a rigid “scaffold” Notochord Notochord

4. 1 - $200 This increases tail surface area and therefore increases thrust This increases tail surface area and therefore increases thrust Caudal fin Caudal fin

5. 1 - $300 Gas-filled sac that arises as a pouch from the embryonic gut Swim bladder Swim bladder

6. 1 - $400 Gases move from areas of higher concentration to areas of lower concentration according to this Diffusion gradient Diffusion gradient

7. 1 - $500 1. Allows for grasping of objects 2. Vertebrates no longer had to be filter feeders 3. May have favored larger body size are indications of this evolutionary change 1. Allows for grasping of objects 2. Vertebrates no longer had to be filter feeders 3. May have favored larger body size are indications of this evolutionary change Implications of jaw development Implications of jaw development

8. 2 - $100 A tough flexible connective tissue of cells and protein A tough flexible connective tissue of cells and protein Cartilage Cartilage

9. 2 - $200 Helps a shark maintain its neutral buoyancy Helps a shark maintain its neutral buoyancy An extremely large liver

10. 2 - $300 Tiny teeth deeply embedded in skin that grow in number as the fish grows Tiny teeth deeply embedded in skin that grow in number as the fish grows Placoid scales Placoid scales

11. 2 - $400 These detect pressure changes in water along the lateral line These detect pressure changes in water along the lateral line Neuromasts Neuromasts

12. 2 - $500 DAILY DOUBLE Ligaments that stretch at key points, allowing jaws to turn outward describes this Jaw Suspension Jaw Suspension

13. 3 - $100 A describes this animal Air-breathing reptiles with streamlined bodies and large flippers describes this animal Marine turtle Marine turtle

14. 3 - $200 Six marine turtles found in U.S. waters Six marine turtles found in U.S. waters Green, Hawksbill, Kemp's Ridley, Leatherback, Loggerhead, and Olive Ridley. Green, Hawksbill, Kemp's Ridley, Leatherback, Loggerhead, and Olive Ridley.

15. 3 - $300 Major threats to sea turtles in the U.S. include these we studied Major threats to sea turtles in the U.S. include these we studied Habitat destruction, entanglement, by-catch, vessel strikes Habitat destruction, entanglement, by-catch, vessel strikes

16. 3 - $400 The most abundant sea turtle in the world, with an estimated 800,000 nesting females The most abundant sea turtle in the world, with an estimated 800,000 nesting females Olive Ridley Turtle Olive Ridley Turtle

17. 3 - $500 Considered the smallest marine turtle in the world Considered the smallest marine turtle in the world Kemp's Ridley Turtle Kemp's Ridley Turtle

18. 4 - $100 The world's largest living reptile in terms of mass. Saltwater crocodile

19. 4 - $200 Average adult croc males can reach sizes of up to Average adult croc males can reach sizes of up to 6 meters (20 feet) 6 meters (20 feet)

20. 4 - $300 Crocodile breeding territories are usually established along these geographic areas Tidal rivers, creeks, and freshwater areas Tidal rivers, creeks, and freshwater areas

21. 4 - $400 Crocodile movement between different habitats occurs because of these two reasons Crocodile movement between different habitats occurs because of these two reasons A change between the dry and wet seasons and a result of social status A change between the dry and wet seasons and a result of social status

22. 4 - $500 DAILY DOUBLE The commercial value of the saltwater crocodile hide is very high (the most valuable of any crocodile species), due this the size and shape of the belly scales the size and shape of the belly scales

23. 5 - $100 Plankton are mainly eaten by this method Plankton are mainly eaten by this method Filter feeding Filter feeding

24. 5 - $200 DAILY DOUBLE Thought extinct until a living example was found in 1938. Considered a living fossil, lobed fins unique among living fish Coelocanth Coelocanth

25. 5 - $300 These are able to detect extremely faint electrical fields, serve as “volt meters” in sharks Ampullae of Lorenzini

26. 5 - $400 fishes maintain a connection between the gut and swim bladder and can gulp air at surface to fill bladder and burp air out to reduce bladder volume defines this term Physostomous Physostomous

27. 5 - $500 This protects the a shark’s eye Nictitating membrane Nictitating membrane

28. Final Jeopardy Topic: Senses Organ that picks up sound vibrations over great distances Organ that picks up sound vibrations over great distances Lateral line organ Lateral line organ