1. What class of organisms do sharks, rays, and skates belong too? 2. Chondrichthyes have one of the biggest vertebrata. What animal is it?
3. Why does the Great White Shark enjoy eating seals and sea lions?
4. Describe three different deterrents that are currently being tested against sharks and shark attacks
for divers and swimmers?
5. Why are Great White Sharks able to withstand different temperatures and depths?
6. what kind of scales do Chondrichthyes have?
7. All sharks can detect electric fields with their electroreceptors. What is the electroreceptor called?
8. What organ or structure on the shark controls their electro sensory system?
9. What do chondrichthyan use to detect prey?
10. What can be used in sharks to find their mate?
11. Sharks are known as fierce predators, but in reality, what are they?
12. What muscles are used for buccal pumping?
13. Explain buccal pumping and why it is important to sharks.
14. Explain the function of the Enlarged spiracle.
15. What is it called when a shark keep swimming to push extra oxygen over gills.
16. With what do sharks force water over gills?
17. Name the organ that sharks use to keep afloat?
18. In female sharks, all uterine is secreted out of what organ?
19. Describe the three methods by which sharks can reproduce?
20. Explain the basic function of a swim bladder.
21. Name one of the adaptations that sharks have developed to overcome the lack of a swim bladder.
22. What is one advantage that sharks have over bony fish by not having a swim bladder?
23. What is the range of frequencies sharks can hear sound at?
24. Compared to humans, can sharks hear at higher or lower frequencies?
25. Describe the lateral line system in a shark and how it works.
26. How can you distinguish between a male and a female shark?
27. what is it called when animals eat each other in the females womb?
28. What is the purpose of the tapetum lucidium in a shark?
29. How does the tapetum lucidium in a shark help them see?
30. What is the purpose of a nictitating membrane?
31. why do some sharks have enlarged spiracle?
32. What is the difference between viviparous and oviparous?
33. Tiger sharks are unlike other sharks in what way (2 answers)?
34. What do sharks sense in fish when they are in distress?
35. What is ram ventilation to a shark?
36. What is Buccal pumping to a shark?
37. Where are the dorsal and ventral fins located? What is their primary purpose?
38. Where are the caudal fins located? What is their primary purpose?
39. How acute is a shark's sense of smell?
40. Why are sharks important to our worlds oceans?