The commercial bath sponge is made up of
siliceous spicules
spongin fibres
collagen fibres
elastic fibres
Correct Answer :
B. spongin fibres
Related Questions
Cells that aid in locomotion of a sponge are
porocytes
myocytes
choanocytes
none of these
Which of the following is given as a gift in Japan?
Hyalonema
Tethya
Euplectalla
Pheronetna
Ostia are meant to
admit water current
pass out water current
ingest food
excrete waste products
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
Which is not a larva of sponge?
Planula
Stomogastrula
Amphiblastula
Terogastrula
The most common composition of skeleton in sponges is :
Cartilage
Mesenchyma
Spicules and spongin fibres
Myonemes
In leucosolenia, the scleroblasts perform the function of
absorption of food material
excretion
reproduction
formation of spicules
Larva of sponge is known as
planula larva
amphiblastula larva
trochophore larva
glochidium larva
Which one of the following is a flagellated larva of Leucosolenia ?
Planula
Parenchymula
Maggot
Kedia
The gametes in sponges develop from
amoebocytes
archeocytes
choanocytes
myocytes
The skeleton in sponges is composed of
gemmules
spicules
spongin fibre
trychocysts
Gemmules are helpful in
digestion
sexual reproduction
asexual reproduction
current circulation
Collared, flagellated cells covering large parts of the inner chambers of sponges and helping to keep water circulating are
choanocytes
porocytes
pinacocytes
amoebocytes
The commercial bath sponge is made up of
siliceous spicules
spongin fibres
collagen fibres
elastic fibres
What is Euplectella commonly called ?
Glass rope sponge
Venus flower basket
Boring sponge
Commercial bath sponge
Food is stored in-of sponges.
trophocytes
thesocytes
desmocytes
archeocytes
Exogenous budding, a type of asexual reproduction in sponges is known as
gemmulation
gemmation
regeneration
amphimixis
Canal system is characteristic of
corals
sponges
sea urchin
sea horse
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
Sponges belong to the phylum
sporozoa
mastigophora
porifera
coelenterata
The central cavity of the sponge is also called
ostea
gastral cavity
gut
gullet
Path of water in a sponge is
pinacocyte � choanocyte � osculum
osculum > spongocoel � ostia
ostia > spongocoel � osculum
osculum � ostia > spongocoel
The only fresh water species of sponges is
Scypha
Euspcmgia
Spongilla
None of these
The spongocoel is lined by choanocytes in
Leucosolenia
Sycon
Euspnongia
Grautia
The skeleton of sponges is mostly composed of
choanocytes
scleroblasts
pinacocytes
amoebocytes
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
Sponges capture their food by
pinacocytes
thesocytes
choamocytes
scleroblasts
Animals of phylum porifera are characterised by
diploblastic organisation
coelenteron
canal system
coelom
Sycon belongs to the class
calcarea
porifera
hexactinellida
demospongia