invertebrates octopus video. phylum chordata c. vertebrata share four chordate characteristics +...
DESCRIPTION
FishesTRANSCRIPT
![Page 2: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/2.jpg)
Phylum ChordataC. Vertebrata
• Share four chordate characteristics + vertebral column (spine, backbone)
• Spine encloses and protects nerve cord (spinal cord)• Anterior end of spinal cord = brain protected by skull made of bone or
cartilage
1. Fishes• Oldest group of vertebrates (530 mya)
• 27,000+ species (15,600+ marine spp.)• Three major groups
![Page 3: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/3.jpg)
Fishes
![Page 4: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/4.jpg)
FishesA. Class Agnatha – Jawless fish
• No jaws• Unpaired fins and no scales1. Hagfishes
![Page 5: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/5.jpg)
FishesA. Class Agnatha – Jawless fish
1. Hagfishes
![Page 6: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/6.jpg)
FishesA. Class Agnatha – Jawless fish
2. Lampreys
![Page 7: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/7.jpg)
FishesB. Class Chondrichthyes – Cartilaginous Fishes
• Includes sharks, rays, skates and ratfish• Cartilage skeleton• Movable jaws• Paired and Unpaired fins• Placoid scales
![Page 8: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/8.jpg)
FishesB. Class Chondrichthyes – Cartilaginous Fishes
1. Sharks• Fusiform body• Heterocal caudal fin• Characteristic dorsal fin• Gill slits• Powerful jaws
![Page 9: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/9.jpg)
FishesB. Class Chondrichthyes – Cartilaginous Fishes
1. Sharks• Wide size range
![Page 10: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/10.jpg)
FishesB. Class Chondrichthyes – Cartilaginous Fishes
1. Sharks• Very good sensory organs
![Page 11: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/11.jpg)
FishesB. Class Chondrichthyes – Cartilaginous Fishes
1. Sharks• Reproduction – live young or eggs
![Page 12: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/12.jpg)
FishesB. Class Chondrichthyes – Cartilaginous Fishes
1. Sharks• Commercially hunted
![Page 13: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/13.jpg)
FishesB. Class Chondrichthyes – Cartilaginous Fishes
2. Rays and Skates• Dorsally flattened bodies• Demersal• Ventral gills• Modified pectoral fins
a. Stingrays
![Page 14: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/14.jpg)
FishesB. Class Chondrichthyes – Cartilaginous Fishes
2. Rays and Skates• Dorsally flattened bodies• Demersal• Ventral gills• Modified pectoral fins
a. Stingrays
![Page 15: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/15.jpg)
FishesB. Class Chondrichthyes – Cartilaginous Fishes
2. Rays and Skatesb. Electric Rays
![Page 16: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/16.jpg)
FishesB. Class Chondrichthyes – Cartilaginous Fishes
2. Rays and Skatesc. Manta Rays
![Page 17: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/17.jpg)
FishesB. Class Chondrichthyes – Cartilaginous Fishes
2. Rays and Skatesd. Skates
![Page 18: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/18.jpg)
FishesB. Class Chondrichthyes – Cartilaginous Fishes
3. Ratfishes
![Page 19: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/19.jpg)
FishesB. Class Osteichthyes – Cartilaginous Fishes
• Skeleton of bone• Make up 96% of all fish• Cycloid and ctenoid scales• Operculum• Homoceral fin
![Page 20: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/20.jpg)
FishesB. Class Osteichthyes – Cartilaginous Fishes
• Fin rays• Terminal mouth• Swim bladder
![Page 21: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/21.jpg)
Fishes - BiologyA. Body Shapes
• Strongly related to lifestyle
![Page 22: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/22.jpg)
Fishes - BiologyA. Body Shapes
1. Fusiform
Video
![Page 23: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/23.jpg)
Fishes - BiologyA. Body Shapes
2. Laterally Compressed Video
![Page 24: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/24.jpg)
Fishes - BiologyA. Body Shapes
3. Flattened
![Page 25: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/25.jpg)
Fishes - BiologyA. Body Shapes
4. Eel-likeVideo
![Page 26: Invertebrates Octopus Video. Phylum Chordata C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a4d1b4c7f8b9ab0599a5fb0/html5/thumbnails/26.jpg)
Fishes - BiologyA. Body Shapes
5. Unusual, Irregular
Video