Lab Final Flashcards
have no true tissues
Sponges
Path of waterflow through a sponge
Pores, spongocoel (body cavity), osculum (exit hole)
choanocytes
specialized cells that move water through sponges (collar cells)
spicules and spongin
collagen in a sponge
cnidocytes
stinging cells in Phylum Cnidaria
have true tissues
radial symmetry
have stinging cells on tentacles and elsewhere
tentacles surround mouth
Radiata- Phylum Cnidaria
Have both polyp and medusa stages (within phylum cnidaria)
Hydrozoa
Phylum and class of Jelly fish
Medusa or polyp dom?
Phylum Cnidaria, Class scyphozoa
dominant medusae
Phylum and class of sea anemones/coral
polyp or medusa
Phylum Cnidaria
Class Anthozoa
Polyp only
What phylum and class have animals that secrete calcium carbonate exoskeletons
Phylum Cnidaria
Class Anthozoa
Bilateria
Animals with bilateral symmetry
Dorsal
ventral
anterior
posterior
D: Top
Ven: bottom
An: front
Post: Back
acoelomate means
no body cavity
pseudocoelomate means
body cavity bound by mesoderm on one side
coelomate (or eucoelomate) means
“true” body cavity, surrounded by mesoderm on both sides
coelom surrounded by __________
mesodermal tissue
2 clades in Bilateria
Protostomia (mouth first)
Deutoerstomia (butt first)
3 phylum of bilateria
Platyhelminthes (flatworm)
Annelida (segmented worm)
Mollusca (mollusks)
What phylum does most have dorsoventral flattening
Platyhelminthes (flat worm) Bilateria)