Exogenous budding, a type of asexual reproduction in sponges is known as
gemmulation
gemmation
regeneration
amphimixis
Correct Answer :
A. gemmulation
Related Questions
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
Nervous system in sponges
is well developed
is in the form of a network
is made up of several interconnected ganglia
is absent
Cells that aid in locomotion of a sponge are
porocytes
myocytes
choanocytes
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
Phylogenetically, the sponges have evolved from
protozoans
flagellates
choano flagellate
ciliates
Which is not a larva of sponge?
Planula
Stomogastrula
Amphiblastula
Terogastrula
Sponges capture their food by
pinacocytes
thesocytes
choamocytes
scleroblasts
The scientific name of commercial bath sponge is
Cliona
Hyalonema
Chalina
Euspongia
The central cavity of the sponge is also called
ostea
gastral cavity
gut
gullet
Sponges belong to the phylum
sporozoa
mastigophora
porifera
coelenterata
Sycon belongs to the class
calcarea
porifera
hexactinellida
demospongia
Sponges with a skeleton of calcium carbonate belongs to the class
calcarea
demospongia
anthozoa
hexactinellida
Canal system in Leucosolenia is
asconoid
syconoid
leuconoid
rhagon
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 most common composition of skeleton in sponges is :
Cartilage
Mesenchyma
Spicules and spongin fibres
Myonemes
The commercial bath sponge is made up of
siliceous spicules
spongin fibres
collagen fibres
elastic fibres
Difference between a sponge and a metazoan is that sponge do not contain
cells
cell organisation
cell division
division of labour
Which of the following is given as a gift in Japan?
Hyalonema
Tethya
Euplectalla
Pheronetna
Animals of phylum porifera are characterised by
diploblastic organisation
coelenteron
canal system
coelom
Asexual reproduction in sponges is by forming buds and
gemmules
spicules
spongin fibres
choanocytes
The skeleton in sponges is composed of
gemmules
spicules
spongin fibre
trychocysts
One of the characteristic features of the sponges is the presence of
vaselike globular body
a central cavity
radial symmetry
choanocyts
Sponges capture their food by
choanocytes
porocytes
amoebocytes
pinacocytes
Lencosolenia is
free living, solitary, marine
free living, fresh water, solitary
free living, colonial, marine
Solitary, colonial, fresh water
Ostia are meant to
admit water current
pass out water current
ingest food
excrete waste products
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
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