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
Correct Answer :
B. gemmule
Related Questions
Ostia are meant to
admit water current
pass out water current
ingest food
excrete waste products
Sponges capture their food by
pinacocytes
thesocytes
choamocytes
scleroblasts
Gemmules are helpful in
digestion
sexual reproduction
asexual reproduction
current circulation
Which of the following is given as a gift in Japan?
Hyalonema
Tethya
Euplectalla
Pheronetna
Difference between a sponge and a metazoan is that sponge do not contain
cells
cell organisation
cell division
division of labour
Sycon belongs to the class
calcarea
porifera
hexactinellida
demospongia
The commercial bath sponge is made up of
siliceous spicules
spongin fibres
collagen fibres
elastic fibres
A chamber which is common in different types of canal system:
Radial canal
Inhalant canal
Spongocoel
None of these
Canal system is characteristic of
corals
sponges
sea urchin
sea horse
Exogenous budding, a type of asexual reproduction in sponges is known as
gemmulation
gemmation
regeneration
amphimixis
The phylum porifera contains most primitive of multicellular animals called
corals
sea pen
comb jellies
sponges
Animals of phylum porifera are characterised by
diploblastic organisation
coelenteron
canal system
coelom
The skeleton in sponges is composed of
gemmules
spicules
spongin fibre
trychocysts
The skeleton of sponges is mostly composed of
choanocytes
scleroblasts
pinacocytes
amoebocytes
In leucosolenia, the scleroblasts perform the function of
absorption of food material
excretion
reproduction
formation of spicules
The larva of Sycoti is
parenchyma
alanula
redia
amphib las tula
The commercial bath sponge belongs to
porifera
gatropoda
coelenterata
ctenophora
Sponges capture their food by
choanocytes
porocytes
amoebocytes
pinacocytes
Food is stored in-of sponges.
trophocytes
thesocytes
desmocytes
archeocytes
Cells that aid in locomotion of a sponge are
porocytes
myocytes
choanocytes
none of these
The central cavity of the sponge is also called
ostea
gastral cavity
gut
gullet
The scientific name of commercial bath sponge is
Cliona
Hyalonema
Chalina
Euspongia
Lencosolenia is
free living, solitary, marine
free living, fresh water, solitary
free living, colonial, marine
Solitary, colonial, fresh water
The spongocoel is lined by choanocytes in
Leucosolenia
Sycon
Euspnongia
Grautia
Path of water in a sponge is
pinacocyte � choanocyte � osculum
osculum > spongocoel � ostia
ostia > spongocoel � osculum
osculum � ostia > spongocoel
What is Euplectella commonly called ?
Glass rope sponge
Venus flower basket
Boring sponge
Commercial bath sponge
One of the characteristic features of the sponges is the presence of
vaselike globular body
a central cavity
radial symmetry
choanocyts
Asexual reproduction in sponges is by forming buds and
gemmules
spicules
spongin fibres
choanocytes
The pathway of entring and coming out of water of sponges is
water vascular system
canal system
feeding current
circulating current
Phylogenetically, the sponges have evolved from
protozoans
flagellates
choano flagellate
ciliates