If a carmine particle is put on the os~ culum of a living sponge, it will
adhere
rotate
be ingested
none of these
Correct Answer :
B. rotate
Related Questions
Sponges capture their food by
choanocytes
porocytes
amoebocytes
pinacocytes
Animals of phylum porifera are characterised by
diploblastic organisation
coelenteron
canal system
coelom
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
The commercial bath sponge belongs to
porifera
gatropoda
coelenterata
ctenophora
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 gametes in sponges develop from
amoebocytes
archeocytes
choanocytes
myocytes
Exogenous budding, a type of asexual reproduction in sponges is known as
gemmulation
gemmation
regeneration
amphimixis
Phylogenetically, the sponges have evolved from
protozoans
flagellates
choano flagellate
ciliates
Asexual reproduction in sponges is by forming buds and
gemmules
spicules
spongin fibres
choanocytes
Sponges are not found in
cold water
sea water
sandy shore
brackish water
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
Difference between a sponge and a metazoan is that sponge do not contain
cells
cell organisation
cell division
division of labour
Ostia are meant to
admit water current
pass out water current
ingest food
excrete waste products
The commercial bath sponge is made up of
siliceous spicules
spongin fibres
collagen fibres
elastic fibres
The canal system in sponges does not serve the function of
nutrition
respiration
excretion
sexual reproduction
The central cavity of the sponge is also called
ostea
gastral cavity
gut
gullet
Canal system in Leucosolenia is
asconoid
syconoid
leuconoid
rhagon
Larva of sponge is known as
planula larva
amphiblastula larva
trochophore larva
glochidium larva
A sponge is a
coelomata
acoelomata
metacoelomata
pseudocoelomates
Sponges with a skeleton of calcium carbonate belongs to the class
calcarea
demospongia
anthozoa
hexactinellida
If a carmine particle is put on the os~ culum of a living sponge, it will
adhere
rotate
be ingested
none of these
Sycon belongs to the class
calcarea
porifera
hexactinellida
demospongia
Which is not a larva of sponge?
Planula
Stomogastrula
Amphiblastula
Terogastrula
The larva of Sycoti is
parenchyma
alanula
redia
amphib las tula
Nervous system in sponges
is well developed
is in the form of a network
is made up of several interconnected ganglia
is absent
Lencosolenia is
free living, solitary, marine
free living, fresh water, solitary
free living, colonial, marine
Solitary, colonial, fresh water
Food is stored in-of sponges.
trophocytes
thesocytes
desmocytes
archeocytes
Path of water in a sponge is
pinacocyte � choanocyte � osculum
osculum > spongocoel � ostia
ostia > spongocoel � osculum
osculum � ostia > spongocoel