calcarea
demospongia
anthozoa
hexactinellida
A. calcarea
absorption of food material
excretion
reproduction
formation of spicules
on the external body surface
line the gastric cavity
located between the outer and inner layers
in the mesodermal layer
cold water
sea water
sandy shore
brackish water
Planula
Parenchymula
Maggot
Kedia
trophocytes
thesocytes
desmocytes
archeocytes
choanocytes
porocytes
pinacocytes
amoebocytes
pinacocytes
thesocytes
choamocytes
scleroblasts
parenchyma
alanula
redia
amphib las tula
Hyalonema
Tethya
Euplectalla
Pheronetna
water vascular system
canal system
feeding current
circulating current
cells
cell organisation
cell division
division of labour
planula larva
amphiblastula larva
trochophore larva
glochidium larva
digestion
sexual reproduction
asexual reproduction
current circulation
gemma
gemmule
bud
bulbul
sporozoa
mastigophora
porifera
coelenterata
gemmulation
gemmation
regeneration
amphimixis
free living, solitary, marine
free living, fresh water, solitary
free living, colonial, marine
Solitary, colonial, fresh water
siliceous spicules
spongin fibres
collagen fibres
elastic fibres
choanocytes
porocytes
amoebocytes
pinacocytes
choanocytes
scleroblasts
pinacocytes
amoebocytes
Cliona
Hyalonema
Chalina
Euspongia
calcarea
porifera
hexactinellida
demospongia
Robert Grant
Trembly
Robert Brown
Ellias
ostea
gastral cavity
gut
gullet
Radial canal
Inhalant canal
Spongocoel
None of these
Planula
Stomogastrula
Amphiblastula
Terogastrula
Cartilage
Mesenchyma
Spicules and spongin fibres
Myonemes
pinacocyte � choanocyte � osculum
osculum > spongocoel � ostia
ostia > spongocoel � osculum
osculum � ostia > spongocoel
vaselike globular body
a central cavity
radial symmetry
choanocyts
porifera
gatropoda
coelenterata
ctenophora