absorption of food material
excretion
reproduction
formation of spicules
D. formation of spicules
digestion
sexual reproduction
asexual reproduction
current circulation
siliceous spicules
spongin fibres
collagen fibres
elastic fibres
sporozoa
mastigophora
porifera
coelenterata
porocytes
myocytes
choanocytes
none of these
free living, solitary, marine
free living, fresh water, solitary
free living, colonial, marine
Solitary, colonial, fresh water
adhere
rotate
be ingested
none of these
calcarea
demospongia
anthozoa
hexactinellida
Hyalonema
Tethya
Euplectalla
Pheronetna
corals
sea pen
comb jellies
sponges
Glass rope sponge
Venus flower basket
Boring sponge
Commercial bath sponge
choanocytes
porocytes
pinacocytes
amoebocytes
diploblastic organisation
coelenteron
canal system
coelom
gemmules
spicules
spongin fibre
trychocysts
protozoans
flagellates
choano flagellate
ciliates
coelomata
acoelomata
metacoelomata
pseudocoelomates
Planula
Parenchymula
Maggot
Kedia
Cliona
Hyalonema
Chalina
Euspongia
parenchyma
alanula
redia
amphib las tula
ostea
gastral cavity
gut
gullet
gemmules
spicules
spongin fibres
choanocytes
corals
sponges
sea urchin
sea horse
gemma
gemmule
bud
bulbul
water vascular system
canal system
feeding current
circulating current
calcarea
porifera
hexactinellida
demospongia
nutrition
respiration
excretion
sexual reproduction
pinacocytes
thesocytes
choamocytes
scleroblasts
Robert Grant
Trembly
Robert Brown
Ellias
on the external body surface
line the gastric cavity
located between the outer and inner layers
in the mesodermal layer
pinacocyte � choanocyte � osculum
osculum > spongocoel � ostia
ostia > spongocoel � osculum
osculum � ostia > spongocoel
gemmulation
gemmation
regeneration
amphimixis