The canal system in sponges does not serve the function of
nutrition
respiration
excretion
sexual reproduction
Correct Answer :
D. sexual reproduction
Related Questions
What is Euplectella commonly called ?
Glass rope sponge
Venus flower basket
Boring sponge
Commercial bath sponge
Phylogenetically, the sponges have evolved from
protozoans
flagellates
choano flagellate
ciliates
The most common composition of skeleton in sponges is :
Cartilage
Mesenchyma
Spicules and spongin fibres
Myonemes
The pathway of entring and coming out of water of sponges is
water vascular system
canal system
feeding current
circulating current
Larva of sponge is known as
planula larva
amphiblastula larva
trochophore larva
glochidium larva
The commercial bath sponge is made up of
siliceous spicules
spongin fibres
collagen fibres
elastic fibres
In leucosolenia, the scleroblasts perform the function of
absorption of food material
excretion
reproduction
formation of spicules
Sponges capture their food by
pinacocytes
thesocytes
choamocytes
scleroblasts
Path of water in a sponge is
pinacocyte � choanocyte � osculum
osculum > spongocoel � ostia
ostia > spongocoel � osculum
osculum � ostia > spongocoel
Animals of phylum porifera are characterised by
diploblastic organisation
coelenteron
canal system
coelom
Gemmules are helpful in
digestion
sexual reproduction
asexual reproduction
current circulation
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
The only fresh water species of sponges is
Scypha
Euspcmgia
Spongilla
None of these
The phylum porifera contains most primitive of multicellular animals called
corals
sea pen
comb jellies
sponges
Which one of the following is a flagellated larva of Leucosolenia ?
Planula
Parenchymula
Maggot
Kedia
The skeleton of sponges is mostly composed of
choanocytes
scleroblasts
pinacocytes
amoebocytes
Sponges are not found in
cold water
sea water
sandy shore
brackish water
Which of the following is given as a gift in Japan?
Hyalonema
Tethya
Euplectalla
Pheronetna
Canal system is characteristic of
corals
sponges
sea urchin
sea horse
One of the characteristic features of the sponges is the presence of
vaselike globular body
a central cavity
radial symmetry
choanocyts
Lencosolenia is
free living, solitary, marine
free living, fresh water, solitary
free living, colonial, marine
Solitary, colonial, fresh water
Which is not a larva of sponge?
Planula
Stomogastrula
Amphiblastula
Terogastrula
Sponges with a skeleton of calcium carbonate belongs to the class
calcarea
demospongia
anthozoa
hexactinellida
Sponges belong to the phylum
sporozoa
mastigophora
porifera
coelenterata
Cells that aid in locomotion of a sponge are
porocytes
myocytes
choanocytes
none of these
The gametes in sponges develop from
amoebocytes
archeocytes
choanocytes
myocytes
The animal nature of sponges was established by
Robert Grant
Trembly
Robert Brown
Ellias
The canal system in sponges does not serve the function of
nutrition
respiration
excretion
sexual reproduction
The scientific name of commercial bath sponge is
Cliona
Hyalonema
Chalina
Euspongia