Deck 3 Flashcards
echinoderms have blank so they can change shape and drop body parts
mutable collagenous tissue
papulae are the same as
tube feet
there are more than blank extinct classes of echinoderms
20
there are five classes of echinoderms and they are
asteroidea, crinoidea, echinoidea, holothuroidea, ophiuroidea
this class of echinoderm includes seas stars and sea daisies
asteroidea
this class of echinoderms includes sea lillies and feather stars
crinoidea
this class of echinoderms includes sea urchins and sand dollars
echinoidea
this class of echinoderms includes sea cucumbers
holothuroidea
this class of echinoderms includes brittle stars
ophiuroidea
The chordates nearest relative is the blank
echinoderms
Five features characterize chordates and they are
nerve cord, notochord, pharyngeal slits, postanal tail, endostyle
turned into the spinal cord
nerve cord
turgid cord of cells wrapped with connective tissue that turned into the spinal column
notochord
gill arches that form bones in ears
pharyngeal slits
manages iodine metabolism and turns into the thyroid gland
endostyle
three subphyla of the chordata phylum
cephalochordata, urochordata, vertebrata
subphylum of chordata that have all chordate characteristics throughout lifetime but no anterior sense organs or brain
cephalochordata
oldest chordate which was a cephalochordate
pikaia
subphylum of chordata that includes tunicates and are marine animals with tadpolelike larvae and adults typically lose the tail, nerve chord, and notochord
urochordata
urochordata often secrete a blank which is a cellulose sac that surrounds the animal
tunic
subphylum of chordates that includes vertebrates and an endoskeleton made of cartilage or bone
vertebrata
chordates with a spinal column
vertebrates
most diverse vertebrate group including half of all vertebrates
fishes
five characteristics of fishes
vertebral column, jaws and paired appendages, internal gills, single loop blood circulation, nutritional deficiencies