How do the arms and central disc of sea stars differ from those of brittle stars discussed earlier?
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Terms in this set (31)
which of the following is a unique feature of the Holothuroidea?respiratory treeWhat are the different names of the echinoderms shows in the YouTube channel videos.spanish moss, orange sea star, sea urchinwhat is the name of the mass of cells that the "wounded part" reverts back to ?blastemawhats the first example that Paul gives when he refers to a long life property of autotomy?long life in sea urchinschizocoelous coelom formation is typical of deuterostomes.false - in deterostimes the Coelom formation is enterocoelousall echinoderms have pentaradial symmetry as adults.truethe function of the cirri or conoids is similar to the cirri of cirripedsfalse- cirri in crinoids functions as anchorage or to movefunction of Cuvierian tubules ?defenseHolothuroids have a madreporite on the aboral surfacefalse - madrepore is internal in Holothuroideaorganizationorgan levelembryonic development-triploblast -deuterostome -eucoelomate (or coelomate)symmetry-radial -pentaradial -bilateralskeleton/ support-hydrostatic skeleton -endoskeletonmovement/locomotion-tube feet -water vascular system -longitudinal muscles only -hydrostatic skeletonsensory/nervous system-nerve network -light sensing organscirculationhemal (or haemal) systemdigestive/feeding-complete (mouth and anus) -predators -extracellular digestion onlyexcretory/ osmoregulation-diffusionreproduction-sexual -dioecious -asexual reproduction -external fertilizationrespiration-diffusion -simple dermal gills -tube feet that take up oxygen from waterHow does water flow in the water vascular system of the sea star?-madreporite -stone canal -ring canal -radial canal -ampullae -tube feet