J A W L E S S & C A R T I L A G I N O U S F I S H E S
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Jawless fish like lampreys and hagfish have no vertebrae or jaws. Lampreys are parasites with a larval stage while hagfish live on the ocean floor as scavengers. Cartilaginous fish like sharks have a skeleton of cartilage and ventral mouths. They have tails like heterocercal or homocercal tails and complex digestive systems to break down their food. They reproduce internally and give live birth.
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All living things are composed of cells that are highly organized at the cellular and molecular levels. They use energy through metabolism, maintain stable internal conditions through homeostasis, grow and develop over time through processes like cell division, can respond to environmental stimuli, and reproduce either asexually or sexually to ensure the survival of their species even as they naturally change over time.Introduction to Animals
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This PowerPoint is used as an introduction to animals characteristics in my High School Honors Zoology Class.Recently uploaded (20)
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J A W L E S S & C A R T I L A G I N O U S F I S H E S
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- 2. JAWLESS FISH=> Subphylum: Vertebrata, Class: Agnatha lampreys and hagfishes scaleless, cylindrical body no vertebral column (a notochord) poor swimmers
- 3. JAWLESS FISH=> LAMPREYS are usually parasites with a larval stage which filter-feeds HAGFISHES have no larval stage and live at the bottom of cold seas acting as scavengers.
- 4. buccal funnel or m看顎岳鞄
- 5. lampreys on lake trout
- 6. sea lamprey
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- 9. CARTILAGINOUS FISH=> Subphylum: Vertebrata, Class: Chondrichthyes sharks, rays and skates skeleton of cartilage hinged jaws, paired fins ventral mouth
- 10. 油
- 11. heterocercal tail homocercal tail TAILS:
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- 13. CARTILAGINOUS FISH=> have large, oily liver for buoyancy (to 20% wt.) still heavier than water
- 14. CARTILAGINOUS FISH=> tough skin, placoid scales ventral mouth w/ 6 to 20 rows of sharp teeth
- 15. shark jawbone
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- 17. 油
- 18. CARTILAGINOUS FISH=> 5-7 pairs of gills (many must swim constantly)
- 19. Silky Shark
- 20. CARTILAGINOUS FISH=> complex digestive system with spiral valve intestine
- 21. CARTILAGINOUS FISH=> have a lateral line system fertilization is internal and are usually born live
- 22. Ampullae of Lorenzini
- 23. Techno Shark
- 24. Gray Reef Shark
- 27. Hammerhead Shark
- 28. Silky Shark
- 29. Whitetip Reef Sharks need love too...
- 30. Whale Shark
- 31. Whale Shark
- 32. Whale Shark
- 36. Manta Ray
- 37. Manta Ray
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