Planula
Parenchymula
Maggot
Kedia
B. Parenchymula
Hyalonema
Tethya
Euplectalla
Pheronetna
on the external body surface
line the gastric cavity
located between the outer and inner layers
in the mesodermal layer
trophocytes
thesocytes
desmocytes
archeocytes
parenchyma
alanula
redia
amphib las tula
corals
sea pen
comb jellies
sponges
free living, solitary, marine
free living, fresh water, solitary
free living, colonial, marine
Solitary, colonial, fresh water
Leucosolenia
Sycon
Euspnongia
Grautia
gemmulation
gemmation
regeneration
amphimixis
pinacocyte � choanocyte � osculum
osculum > spongocoel � ostia
ostia > spongocoel � osculum
osculum � ostia > spongocoel
amoebocytes
archeocytes
choanocytes
myocytes
protozoans
flagellates
choano flagellate
ciliates
porifera
gatropoda
coelenterata
ctenophora
diploblastic organisation
coelenteron
canal system
coelom
coelomata
acoelomata
metacoelomata
pseudocoelomates
nutrition
respiration
excretion
sexual reproduction
pinacocytes
thesocytes
choamocytes
scleroblasts
admit water current
pass out water current
ingest food
excrete waste products
planula larva
amphiblastula larva
trochophore larva
glochidium larva
ostea
gastral cavity
gut
gullet
One mouth and innumerable exits
Mouth serves for both, ingestion and egestion
Innumerable mouths and one exit
The body encloses a single cavity the coeienteron
choanocytes
porocytes
pinacocytes
amoebocytes
gemmules
spicules
spongin fibre
trychocysts
cells
cell organisation
cell division
division of labour
water vascular system
canal system
feeding current
circulating current
Scypha
Euspcmgia
Spongilla
None of these
Planula
Stomogastrula
Amphiblastula
Terogastrula
porocytes
myocytes
choanocytes
none of these
cold water
sea water
sandy shore
brackish water
calcarea
demospongia
anthozoa
hexactinellida
choanocytes
scleroblasts
pinacocytes
amoebocytes