The animal nature of sponges was established by
Robert Grant
Trembly
Robert Brown
Ellias
Correct Answer :
D. Ellias
Related Questions
The skeleton in sponges is composed of
gemmules
spicules
spongin fibre
trychocysts
Animals of phylum porifera are characterised by
diploblastic organisation
coelenteron
canal system
coelom
Sponges capture their food by
pinacocytes
thesocytes
choamocytes
scleroblasts
The skeleton of sponges is mostly composed of
choanocytes
scleroblasts
pinacocytes
amoebocytes
One of the characteristic features of the sponges is the presence of
vaselike globular body
a central cavity
radial symmetry
choanocyts
The most common composition of skeleton in sponges is :
Cartilage
Mesenchyma
Spicules and spongin fibres
Myonemes
The scientific name of commercial bath sponge is
Cliona
Hyalonema
Chalina
Euspongia
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
Sponges capture their food by
choanocytes
porocytes
amoebocytes
pinacocytes
The phylum porifera contains most primitive of multicellular animals called
corals
sea pen
comb jellies
sponges
Path of water in a sponge is
pinacocyte � choanocyte � osculum
osculum > spongocoel � ostia
ostia > spongocoel � osculum
osculum � ostia > spongocoel
Which is not a larva of sponge?
Planula
Stomogastrula
Amphiblastula
Terogastrula
A sponge is a
coelomata
acoelomata
metacoelomata
pseudocoelomates
The commercial bath sponge belongs to
porifera
gatropoda
coelenterata
ctenophora
Sycon belongs to the class
calcarea
porifera
hexactinellida
demospongia
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
Which one of the following is a flagellated larva of Leucosolenia ?
Planula
Parenchymula
Maggot
Kedia
The spongocoel is lined by choanocytes in
Leucosolenia
Sycon
Euspnongia
Grautia
The pathway of entring and coming out of water of sponges is
water vascular system
canal system
feeding current
circulating current
If a carmine particle is put on the os~ culum of a living sponge, it will
adhere
rotate
be ingested
none of these
The central cavity of the sponge is also called
ostea
gastral cavity
gut
gullet
The commercial bath sponge is made up of
siliceous spicules
spongin fibres
collagen fibres
elastic fibres
Asexual reproduction in sponges is by forming buds and
gemmules
spicules
spongin fibres
choanocytes
What is Euplectella commonly called ?
Glass rope sponge
Venus flower basket
Boring sponge
Commercial bath sponge
A chamber which is common in different types of canal system:
Radial canal
Inhalant canal
Spongocoel
None of these
Lencosolenia is
free living, solitary, marine
free living, fresh water, solitary
free living, colonial, marine
Solitary, colonial, fresh water
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 gametes in sponges develop from
amoebocytes
archeocytes
choanocytes
myocytes
Nervous system in sponges
is well developed
is in the form of a network
is made up of several interconnected ganglia
is absent
Sponges with a skeleton of calcium carbonate belongs to the class
calcarea
demospongia
anthozoa
hexactinellida