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biology chp 34

Stack #48291

QuestionAnswer
describe a chordate bilaterian belonging to the clade deuterostoma at some point during development have a notochord a dorsal hollow nerve cord pharyngeal slits or clefs and a muscular post anal tail
what is a notochord longitudinal flexable rod that funs along the dorsal axis of an animals body
what are pharyngeal clefts slits that allow water entering the mouth to exit without passing through the entire digestive tube
somites blocks of mesoderm sound along each side of the notochord in all chordate embryos (develops muscle segments in lancelets)
neural crest a band of cells along the border where the neural tube pinches off from the ectoderm these cells migrate out to form various structures
lateral line system a row of microscopic organs sensitive to vibrations in the surrounding water
chondrichthyans cartilagenous fish
oviparous lay eggs that hatch outside the mothers body
ovoviviparous retain the fertilized eggs within the oviduct
viviparous young develop wihtin the uterus
extraembryonic membrane specialized memcrane that protects the embryo
ectothermic organisms that do not produce enough heat thorugh metabolism to have much effect on body temperature
endothermic organisms capable of keeping the body warm through metabolism
what phylum is vertebrata a subphylum of cordata and belong to the clade of deuterostomia
cindy cuts vegatative greens tuesday and monday howard cordates crinates are cordates with a head vertibrates are crin with a backdone gnathastomes are vertib with a jaw tetrapods are gnath with limbs and feet amnitotes are tetra that have a terestialy adapted egg mamals are amnitotes with hair and milk human
chordate have a notocord a dorsal hollow nerve cord and are bilaterian
human bipedal hominoids with a large brain
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