Across
- 2. protective gill flap
- 3. Primitive Chordate
- 6. Teeth-like scales that assist with faster swimming
- 9. Single Combination excretory opening
- 13. Upper Heart Chamber
- 14. Sensory strip of tissue that give the organism environment Info
- 15. Fin on the back on fish, acts as a rudder
- 16. Supportive spine like rod
- 17. Lower Heart Chamber
- 18. Egg Laying flat shark
- 19. Jawless blind fish that secretes defensive slime.
- 20. Fish whose fins are joined at the body
Down
- 1. Fin just behind the gills to assist swimming
- 4. Benthic Filter Feeder
- 5. When an organism's body temperature is environment dependent
- 7. Jawless tube shaped parasite
- 8. Balloon like organ that control buoyancy
- 10. Tail Fin
- 11. Fish whose fins stretch over spiky bone or spines
- 12. Benthic Egg laying shark