elephant tusk shells
butterflies of the sea
lerrfons of the sea
cucumbers of the sea
B. butterflies of the sea
cuttlefish
squid
flying squid
devil fish
expelling water in a jet through siphon
lashing moment of their cephalic arms
characteristic undulations of their lateral fins
none of these
Unio
Vila
Mytilus
Loligo
Gastropoda
Criton
Bivalvia
Monoplacophora
Sepia
Loligo
Patella
Nautilus
Chaetopterus
Aphrodite
Amphihite
Limidus
Sepia (Caphalopoda)
Uttio (Pelecypoda)
Dentalium (Scaphopoda)
Pila (Gastropoda)
Pila
Aplysia
Helix
Aphrodite
dentalium
cypraea
nautilus
pinctada
Sepia
Lamellidens
Chiron
Pila
limax and helix
pila and helix
lymnaea and planorbis
none of these
Caphalopods
Scaphopods
Bivalva
Gastropods
Neoplina
Chiton
Dentalium
Patella
book lungs
pulmonary sacs
gills
respiratory siphons
sea hare
Pond snail
fresh water mussel
chiton
Pelecypoda
Scaphopoda
Bivalva
Gastropoda
Octopus
Sepia
Mytilus
Teredo
Chiton
Unio
Teredo
Nautilus
Pila
Unio
Mytilus
Nautilus
Unio
Mytilus
Teredo
Tridacna
pulmonary sac
ctenidia
book lungs
trachea
devilfish
cuttlefish
black mussel
sea hare
giant clam
giant squid
giant Snail
giant octopus
Caphalopoda
Gastropoda
Pelecypoda
Scaphopoda
Echinodenns
Arthropods
Molluscs
Annelida
thoracic appendages
foot
head appendages
none of these
myoglobin
anthocyanin
haemocyanin
hemoglobin
scallop
sea mussel
razor shell
any of these
Sepia
Loligo
Octopus
Mytilus
foot is located on head
head is fused with thorax
head is located on foot
notochord extends upto cephalic region