Zusammenfassung der Ressource
Phylum Chordata
- Have a notochord
- Hollow dorsal nerve tube
- Tail that extends beyond the anus
- Muscular tube called pharynx
- Vertebrata
- Class Agnatha (Jawless fish)
- Slimy skin
- Lack paired fins
- Notochord and skeleton made of cartilage
- Ex: lamprey
- Class Chondrichthyes (Cartilaginous fish)
- Jaws
- Paired fins and gills
- Ex: sharks, rays
- Class Osteichthyes (Bony fish)
- Ex: trout, salmon, eel
- Two chambered heart
- Swim bladder
- External fertilization
- Amphibians
- External fertilization
- Herbivore tadpoles
- Become carnivorous
adults with primitive lungs
- Three
chambered heart
- Reptiles
- Terrestrial
- Skin reduces water loss
- Lungs with
internal folds
- Three chambered heart with
septum to partially separate blood
- Amniotic egg
- Lightweight skeleton
- Repositioning of limbs
- Birds
- Feathers
- Air sacs
- Hollow bones
- Four chambered heart
- Lack urinary bladder
- Mammals
- Monotremes
- Ex: platypus
- Egg layers
- Marsupials
- Born immature
- Confined to Australia
- Ex: kangaroos,
koala bears
- Placental Mammals
- Placenta
- Ex: humans, bears
- Umbilical cord
- Mammary glands
- Warm-blooded
- Four chambered heart
- Diaphragm
- Fleshy lips
- Usually 4 legs
with 5 toes
- Echolocation
- Cephalochordata
- Urochordata