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Porifera, Cnidaraia, Platyhelminthes, Nematoda, Rotifera, Annelida,…
Porifera
Forms
glass
"spongy"
calcium
Feed
Filter feed
Spicules
systems
Marine
Digestion occurs across cell membrane
Life cycle
asexual
budding
Sexual
sperm into water
movement
flagella that cause current in the water
Cnidaraia
Derm zones
Ecto
outside
Endo
internal
Mezzo
Jelly like
subgroups
Medusa's
free living
upside down Polys
Jelly fish
Polys
sessile
sea anemone
Hydra
Tentacles
nematocyst
sting (trigger)
catch food
Systems
gastrovascular
mouth and butt at the same spot
True tissue but no organs
Platyhelminthes
Subgroups
Planaria
no parastic
segmentation causes 2 heads
Flukes
parasites
short
have a digestive system
body covering
no id markers
allows for organism to evade detection
Tape worms
penis fence
cause weightloss
Organs
Simple
basic centeralization
some have sensory organ
eye spots
chemical detenction
flat worms
Nematoda
Sub groups
pinworms
hook worm
trichinella
heartworm
Systems
lateral muscles
microscopic
Primitive
No brain
butt and mouth are different
tube for digestive
Round worms
Rotifera
Arthopoda
Annelida
Merostomata
Arachnida