Chordate Zoology - Textbook - Y. V. Tsaryk - 2013

Chapter 4. DIVISION GNATHOSTOMATA, or ECTOBRANCHIATA. SUPERCLASS PISCES

Review Questions

1. What classes does the division Gnathostomata comprise?

2. Name the main Organizational features of the Class Chondrichthyes.

3. What are the Structural Features of shark Skin?

4. Name the Functions of placoid scales.

5. What are the structural Features of the Axial Skeleton of cartilaginous Fishes?

6. What are the structural features of the shark cranial skeleton?

7. What are hyostyly, amphistyly, and autostyly?

8. How many pairs of gill arches do cartilaginous fishes have?

9. What is the distinctive feature of the somatic Muscular System of cartilaginous fishes?

10. What are the CHARACTERISTICS OF THE shark Digestive System?

11. What are the characteristics of the shark Respiratory system?

12. What are the characteristics of the shark Circulatory system?

13. What are the characteristics of the shark excretory system?

14. Which organ is involved in the Regulation of Water-salt balance in sharks?

15. What are the reproductive characteristics of cartilaginous fishes?

16. What are the characteristics of the shark Nervous System?

17. List the Sensory Organs of a shark.

18. What is the function of the electric organ in rays?

19. Name the ancestors of cartilaginous fishes.

20. Which subclasses belong to the class Chondrichthyes?

21. List the orders belonging to the superorder Selachii (sharks).

22. List the orders belonging to the superorder Batoidea (rays).

23. List the main organizational features of the order Chimaeriformes.

24. Name the main organizational features of the class Osteichthyes (bony fishes).

25. What are the structural features of the integument of bony fishes?

26. Name the main differences in The Structure of cosmoid, ganoid, cycloid, and ctenoid scales.

27. What are the structural features of the axial skeleton of a bony fish?

28. What are the structural features of the cranial skeleton of a bony fish?

29. What is the function of the Weberian apparatus in the crucian carp?

30. How many pairs of gill arches do bony fishes have?

31. What are the structural features of the Pectoral Girdle in bony fishes?

32. What are the features of the digestive system of bony fishes?

33. What are the features of the respiratory system of bony fishes?

34. What are the features of the CIRCULATORY SYSTEM OF bony fishes?

35. What are the features of the excretory system of bony fishes?

36. How does water-salt balance differ between freshwater bony fishes and marine fishes?

37. What are the reproductive features of bony fishes?

38. How do anadromous fishes differ from catadromous ones?

39. What are the features of The Nervous System of bony fishes?

40. Name the main organizational features of the superorder Crossopterygii.

41. Name the main organizational features of the superorder Dipnoi.

42. List the orders belonging to the superorder Dipnoi.

43. Name the main organizational features of the superorder Ganoidei.

44. List the orders belonging to the superorder Ganoidei.

45. List the orders belonging to the superorder Clupeomorpha.

46. List the orders belonging to the superorder Cyprinomorpha.

47. List the orders belonging to the superorder Percomorpha.

48. Name the Representatives of the Ichthyofauna of Ukraine.



Last update: 19/08/2026

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