lab 3 Flashcards
what classes are in phylum cnidaria
hydrozoa
scyphozoa
anthozoa
what are some organisms in class hydrozoa
hydras
obelias
siphonophores
hydrocorals
what is a hydra
athecate hydroidw
what is a obelia
thecate hydroid
what organism is in class scyphozoa
aurelia
what subclasses are in class anthozoa
hexacorallia
octocorallia
what organisms in subc hexacorallia
anemones
stony corals
what organisms in subc octocorralia
sea pens and gorgonian sea fans
what is the hypostome
cone shaped structure around mouth
tentacles of hydrozoa
feeding, have nematocystsba
basal disc
attach to substrate
hydrozoa what body forms
polyp and medusa
cnidocyte
defensive cell
cnidae
fire needle
nematocyst
type of cnidae
epithelio muscular cells
produce adhesive vesicles that attach to shit
what is gestrodermis
inside layer
velum
used for jet propulsion in hydrozoa medusa
manubrium
feeding tube near mouth
radial canals
contract to push water out
mesoglea
gelatinous middle layer
what does obelia have thats fuckin weird
gastrozooid and gonozoid
gastrozoid
polyp tentacles, feeding
gonozoid
polyp tentacles, reproductive
mouth lobe
cover manubrium in scyphozoa, bring in food
gastric pouches
contain gonads
radial canals
branched, alsmost like veins
mesogloea
function as hydrostatic skeleton in scyphozoa
rhopalia
light sensing organs
life cycle scyphozoa
planula larva–> scyphistoma(polyp stage) –> strobula–> ephyra
ephyra
medusa, can grow into individual
strobulation
form stacks of pankakes which are budding ephyra
pedal disc
anthozoa
basal disc
septa
extra sirface area, have gonads
siphonoglyphs
slits in pharynx, moves water and food down
acontia
stick outside body for feeding and defense, have nematocytsts
gastrovascular cavity
digestion
pharynx
tube leading to gastrovascular cavity
what is wild bout phylum ctenophora
they have comb rows
comb rows
for feeding instead of oral arms, not real tentacles but are ciliated arms
