animal classification Flashcards
1
Q
Porifera
A
sponges, no coelom no muscles no tissues, have specialized cells
2
Q
Cnidarians
A
jellyfish and hydra, no coelom, two layers of tissue
3
Q
Platyhelminthes
A
flat worms, protostome development but no coelom, some level of cephalization
4
Q
nematodes
A
roundworms, no segmentation, protostome development with pseudocoelom
5
Q
mollusks
A
protostome development but with a coelom, shell formation either external or internal
6
Q
annelida
A
true segmentation, protostome development with coelom, complete digestive system
7
Q
arthropoda
A
coelom, 4 subphyla: hexipoda, myripoda, crustacae, chelicerata
8
Q
echinodermata
A
only marine, pentaradial symmetry in adults, and bilateral symmetry in larval stage. deuterostome with coelom
9
Q
chordates
A
deuterostomes with coelom
