Across
- 3. squrit known as the ascidians, tunicates
- 4. primitive, jawless fish.
- 7. cavity at the end of the digestive tract
- 10. one of two large chambers
- 12. fishes, amphibians, reptiles,
- 14. enlarged, winglike pectoral fins,
- 15. finned fish fleshy base over a bony skeleton
- 16. feed on body fluids and blood of fish.
- 17. buoyancy organ possessed
- 19. Line System allows fishes to detect weak water motions and pressure gradients.
Down
- 1. spiny, toothlike projections
- 2. small fishlike chordates
- 3. a flat body with eyes on the top surface
- 5. flexible rodlike structure
- 6. forms the lid over the insular cortex,
- 8. provides the power to move a fish forward.
- 9. fin located on the back
- 11. blood enters the ventricles
- 13. two fins located on the sides of a fish
- 18. finned fish fins are supported by rays