Animal Divisions Flashcards
without back bone
invertebrates
ex. ascaris, jellyfish, octopus, butterfly
invertebrates
with back bone
vertebrates
ex. panda, shark, cat, dog, snake, frog
vertebrates
without body symmetry
asymmetry
sponges
asymmetry
organized circularly with two identical halves no matter how the animal is cut longitudinally
radial symmetry
coelenterates
radial symmetry
with definite right and left halves, ill produce two identical halves when cut at the center of the body
bilateral symmetry
humans, worms, mollusks, arthropods, echinoderms, chordates
bilateral symmetry
no body cavity, flat
acoelomates
fluke, flatworms
acoelomates
with body cavity but incompletely lined with mesoderm (FAKE)
pseudocoelomates
ascaris, roundworms
pseudocoelomates
with body cavity completely lined with mesoderm
coelomates