Asexual reproduction in sponges is by forming buds and
gemmules
spicules
spongin fibres
choanocytes
Correct Answer :
A. gemmules
Related Questions
A sponge is a
coelomata
acoelomata
metacoelomata
pseudocoelomates
Sycon belongs to the class
calcarea
porifera
hexactinellida
demospongia
Lencosolenia is
free living, solitary, marine
free living, fresh water, solitary
free living, colonial, marine
Solitary, colonial, fresh water
Sponges capture their food by
choanocytes
porocytes
amoebocytes
pinacocytes
Canal system in Leucosolenia is
asconoid
syconoid
leuconoid
rhagon
Gemmules are helpful in
digestion
sexual reproduction
asexual reproduction
current circulation
Which one of the following is a flagellated larva of Leucosolenia ?
Planula
Parenchymula
Maggot
Kedia
Asexual reproduction in sponges is by forming buds and
gemmules
spicules
spongin fibres
choanocytes
Which of the following statements is true of sponges ?
One mouth and innumerable exits
Mouth serves for both, ingestion and egestion
Innumerable mouths and one exit
The body encloses a single cavity the coeienteron
The pathway of entring and coming out of water of sponges is
water vascular system
canal system
feeding current
circulating current
The animal nature of sponges was established by
Robert Grant
Trembly
Robert Brown
Ellias
Ostia are meant to
admit water current
pass out water current
ingest food
excrete waste products
The only fresh water species of sponges is
Scypha
Euspcmgia
Spongilla
None of these
What is Euplectella commonly called ?
Glass rope sponge
Venus flower basket
Boring sponge
Commercial bath sponge
Collared, flagellated cells covering large parts of the inner chambers of sponges and helping to keep water circulating are
choanocytes
porocytes
pinacocytes
amoebocytes
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 skeleton in sponges is composed of
gemmules
spicules
spongin fibre
trychocysts
Which is not a larva of sponge?
Planula
Stomogastrula
Amphiblastula
Terogastrula
In leucosolenia, the scleroblasts perform the function of
absorption of food material
excretion
reproduction
formation of spicules
Food is stored in-of sponges.
trophocytes
thesocytes
desmocytes
archeocytes
The gametes in sponges develop from
amoebocytes
archeocytes
choanocytes
myocytes
Canal system is characteristic of
corals
sponges
sea urchin
sea horse
A chamber which is common in different types of canal system:
Radial canal
Inhalant canal
Spongocoel
None of these
The skeleton of sponges is mostly composed of
choanocytes
scleroblasts
pinacocytes
amoebocytes
Path of water in a sponge is
pinacocyte � choanocyte � osculum
osculum > spongocoel � ostia
ostia > spongocoel � osculum
osculum � ostia > spongocoel
Sponges are not found in
cold water
sea water
sandy shore
brackish water
One of the characteristic features of the sponges is the presence of
vaselike globular body
a central cavity
radial symmetry
choanocyts
Sponges belong to the phylum
sporozoa
mastigophora
porifera
coelenterata
The larva of Sycoti is
parenchyma
alanula
redia
amphib las tula
Difference between a sponge and a metazoan is that sponge do not contain
cells
cell organisation
cell division
division of labour