pulmonary sac
ctenidia
book lungs
trachea
B. ctenidia
Pelecypoda
Scaphopoda
Bivalva
Gastropoda
Annelida
Arthropoda
Mollusca
Chordata
Octopus
Sepia
Mytilus
Teredo
foot is located on head
head is fused with thorax
head is located on foot
notochord extends upto cephalic region
Annelida
Moliusca
Echinodermata
Arthropoda
Pila
Starfish
Housefly
Earthworm
Teredo
Doris
Loligo
Octopus
Gastropoda
Criton
Bivalvia
Monoplacophora
expelling water in a jet through siphon
lashing moment of their cephalic arms
characteristic undulations of their lateral fins
none of these
external shell of cuttle fish
internal shell of cuttle fish
bones of octopus
calcareous matter of cuttle fish
cuttlefish
squid
flying squid
devil fish
pulmonary sac
ctenidia
book lungs
trachea
scallop
sea mussel
razor shell
any of these
Sepia
Loligo
Octopus
Mytilus
Nautilus
Pila
Argpnata
Unio
limax and helix
pila and helix
lymnaea and planorbis
none of these
Unio
Vila
Mytilus
Loligo
devilfish
cuttlefish
black mussel
sea hare
Neoplina
Chiton
Dentalium
Patella
Sepia
Octopus
Aplysia
Doris
Pinctada
Unio
Anodonta
Ostrea
a sensory organ for balancing
a sensory organ for smell
swimming organ
none of these
Chaetopterus
Aphrodite
Amphihite
Limidus
giant clam
giant squid
giant Snail
giant octopus
Pholas
Teredo
Solen
Dentalium
book lungs
pulmonary sacs
gills
respiratory siphons
Unio
Mytilus
Teredo
Tridacna
Pila
Aplysia
Helix
Aphrodite
an annelid
an arthropod
an echinoderm
a mollusc
Pila
Unio
Mytilus
Nautilus