1. Practice Practical

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11. 22. What is this structure?
23. What is this structure?

12. A B 21. Is shark A Male or Female?
20. What is the structure at tip of orange arrow called? B
21. Is shark A Male or Female?

13. 24.

14. 25.
26.

15. 27.
28. This artery is part of what system?

16. 31. These structures are both part of the __ system.
29.
30.

20. 37. What are the white structures called?

22.                                                                                                                                                                      
Is this a skate or ray?

23. 48. What are these thorn-like projections called?

26. Bony fish stay buoyant with an organ called a/an ____ that sharks do not have.

27. What do you call the structure at the tip of green arrow
What do you call the structure at the tip of green arrow? It helps fish sense movement and vibration.