protozoans
flagellates
choano flagellate
ciliates
C. choano flagellate
parenchyma
alanula
redia
amphib las tula
Glass rope sponge
Venus flower basket
Boring sponge
Commercial bath sponge
water vascular system
canal system
feeding current
circulating current
vaselike globular body
a central cavity
radial symmetry
choanocyts
amoebocytes
archeocytes
choanocytes
myocytes
nutrition
respiration
excretion
sexual reproduction
adhere
rotate
be ingested
none of these
gemmules
spicules
spongin fibre
trychocysts
coelomata
acoelomata
metacoelomata
pseudocoelomates
Robert Grant
Trembly
Robert Brown
Ellias
protozoans
flagellates
choano flagellate
ciliates
Cliona
Hyalonema
Chalina
Euspongia
gemmules
spicules
spongin fibres
choanocytes
porifera
gatropoda
coelenterata
ctenophora
free living, solitary, marine
free living, fresh water, solitary
free living, colonial, marine
Solitary, colonial, fresh water
cold water
sea water
sandy shore
brackish water
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
admit water current
pass out water current
ingest food
excrete waste products
siliceous spicules
spongin fibres
collagen fibres
elastic fibres
choanocytes
porocytes
amoebocytes
pinacocytes
Planula
Parenchymula
Maggot
Kedia
Cartilage
Mesenchyma
Spicules and spongin fibres
Myonemes
gemmulation
gemmation
regeneration
amphimixis
Scypha
Euspcmgia
Spongilla
None of these
Hyalonema
Tethya
Euplectalla
Pheronetna
asconoid
syconoid
leuconoid
rhagon
calcarea
demospongia
anthozoa
hexactinellida
pinacocyte � choanocyte � osculum
osculum > spongocoel � ostia
ostia > spongocoel � osculum
osculum � ostia > spongocoel
is well developed
is in the form of a network
is made up of several interconnected ganglia
is absent