Kingdom Animalia (Continued)

" I would hate to be a Sea Cucumber "




Link to a pdf of the Phylum Chordata Worksheet   Look !



*Phylum Chordata - Have all 4 chordate characteristics some time during their life.

          Notochord - Flexible dorsal rod that becomes your backbone.

          Dorsal (hollow) nerve cord - Spinal cord.

          Pharyngeal gill slits - In throat region - used for filter feeding or breathing

          Postanal tail - Tail forms behind/after the anus.

Subphylum Urochordata - Marine filter feeders (invertebrates)

          ( Sea Squirts )

Subphylum Cephalochordata - Marine filter feeders (invertebrates)

          ( Lancelets )

Subphylum Vertebrata - Animals that have a backbone - cephalization, jointed internal skeleton and paired limbs.

          Class Agnatha - Cartilaginous fish that have no jaws, like lampreys.

          Class Chondrichthyes - Cartilaginous fish that have jaws.

          Class Osteichthyes - Bony fish, skin with scales, gills, and 2 chambered heart.

          Class Amphibia - Frogs, toads, and salamanders - Have moist skin and no scales, usually 4 limbs and a 3 chambered heart.

          Class Reptilia - Snakes, turtles, lizards and crocodiles - Dry scaly skin, lungs, and lay eggs with shells.

                    Ectotherm - The animal's source of heat is mainly external.

                    Endotherm - The animal's source of heat is internal.

          Class Aves - Have feathers, wings, hollow bones, shelled eggs, lack teeth, and have a 4-chambered heart.

          Class Mammalia - Have body hair, mammary glands, a muscular diaphragm, unique and diverse teeth, and a well developed brain.










































Return to Greg Sievert's GB 100 Syllabus
Last updated on 4 January 2018