BIOL Lab 191 - Chordates

what are the four characteristics that the members of the Chordata phyla share at some point in their life?

notochord, dorsal hollow nerve chord, pharyngeal slits, postanal tails

what are some of the additional traits characterized by the Chordata phyla? (not the main four)

jointed appendages, segmentation

what subphyla does this belong to?

Cephalochordata

what features did the Vertebrate phyla evolve to have?

vertebral column, cranium, endoskeleton, neural crest, internal organs (circulatory and excretory system), joint appendages

what is oviparous?

birth process where young hatch from an egg

what is viviparous?

birth process where young are born live

what is ovoviviparous?

birth process where young develop halfway in egg, egg hatches in womb, and are given birth to live

what is a clasper?

structure on chondrichthyes that allows males to transfer sperm

what is the symmetry, tissue organization, body cavity and bastula development status of all chordates?

bilateral, triploblastic, coelemate, deuterostomes

what are the three bird feather types?

contour, down, filoplume

what are the three different ways frogs take in oxygen?

gills, lungs, or through skin

what are the three mammal subgroups?

monotremes, marsupials, placental mamals

what sets monotremes apart from other mammals?

oviparous birth, have a cloaca

what sets marsupials apart from other animals?

births young very underdeveloped; transfer to mothers pouch and finish development there

what sets placental mammals apart from other animals?

young are born fully developed and are nourished young with mothers milk