A sponge is a
coelomata
acoelomata
metacoelomata
pseudocoelomates
Correct Answer :
B. acoelomata
Related Questions
Difference between a sponge and a metazoan is that sponge do not contain
cells
cell organisation
cell division
division of labour
What is Euplectella commonly called ?
Glass rope sponge
Venus flower basket
Boring sponge
Commercial bath sponge
Nervous system in sponges
is well developed
is in the form of a network
is made up of several interconnected ganglia
is absent
Sponges with a skeleton of calcium carbonate belongs to the class
calcarea
demospongia
anthozoa
hexactinellida
One of the internal buds of porifera aris- j ing asexually and coming into activity on I death of parent organism is called
gemma
gemmule
bud
bulbul
The animal nature of sponges was established by
Robert Grant
Trembly
Robert Brown
Ellias
Food is stored in-of sponges.
trophocytes
thesocytes
desmocytes
archeocytes
Collared, flagellated cells covering large parts of the inner chambers of sponges and helping to keep water circulating are
choanocytes
porocytes
pinacocytes
amoebocytes
The only fresh water species of sponges is
Scypha
Euspcmgia
Spongilla
None of these
Which of the following is given as a gift in Japan?
Hyalonema
Tethya
Euplectalla
Pheronetna
Asexual reproduction in sponges is by forming buds and
gemmules
spicules
spongin fibres
choanocytes
The canal system in sponges does not serve the function of
nutrition
respiration
excretion
sexual reproduction
Which is not a larva of sponge?
Planula
Stomogastrula
Amphiblastula
Terogastrula
The phylum porifera contains most primitive of multicellular animals called
corals
sea pen
comb jellies
sponges
One of the characteristic features of the sponges is the presence of
vaselike globular body
a central cavity
radial symmetry
choanocyts
Choanocytes in sponges are present
on the external body surface
line the gastric cavity
located between the outer and inner layers
in the mesodermal layer
Gemmules are helpful in
digestion
sexual reproduction
asexual reproduction
current circulation
Lencosolenia is
free living, solitary, marine
free living, fresh water, solitary
free living, colonial, marine
Solitary, colonial, fresh water
The most common composition of skeleton in sponges is :
Cartilage
Mesenchyma
Spicules and spongin fibres
Myonemes
The spongocoel is lined by choanocytes in
Leucosolenia
Sycon
Euspnongia
Grautia
Larva of sponge is known as
planula larva
amphiblastula larva
trochophore larva
glochidium larva
If a carmine particle is put on the os~ culum of a living sponge, it will
adhere
rotate
be ingested
none of these
A sponge is a
coelomata
acoelomata
metacoelomata
pseudocoelomates
Cells that aid in locomotion of a sponge are
porocytes
myocytes
choanocytes
none of these
Canal system in Leucosolenia is
asconoid
syconoid
leuconoid
rhagon
Canal system is characteristic of
corals
sponges
sea urchin
sea horse
The skeleton of sponges is mostly composed of
choanocytes
scleroblasts
pinacocytes
amoebocytes
Exogenous budding, a type of asexual reproduction in sponges is known as
gemmulation
gemmation
regeneration
amphimixis
The commercial bath sponge belongs to
porifera
gatropoda
coelenterata
ctenophora
Which one of the following is a flagellated larva of Leucosolenia ?
Planula
Parenchymula
Maggot
Kedia