sea hare
Pond snail
fresh water mussel
chiton
B. Pond snail
Teredo
Doris
Loligo
Octopus
Chaetopterus
Aphrodite
Amphihite
Limidus
dentalium
cypraea
nautilus
pinctada
Annelida
Moliusca
Echinodermata
Arthropoda
external shell of cuttle fish
internal shell of cuttle fish
bones of octopus
calcareous matter of cuttle fish
a sensory organ for balancing
a sensory organ for smell
swimming organ
none of these
foot is located on head
head is fused with thorax
head is located on foot
notochord extends upto cephalic region
expelling water in a jet through siphon
lashing moment of their cephalic arms
characteristic undulations of their lateral fins
none of these
Pinctada
Unio
Anodonta
Ostrea
Crab
Aretticola
Milipede
Centipede
sea hare
Pond snail
fresh water mussel
chiton
Unio
Vila
Mytilus
Loligo
Sepia
Octopus
Aplysia
Doris
Sepia
Loligo
Patella
Nautilus
myoglobin
anthocyanin
haemocyanin
hemoglobin
Pholas
Teredo
Solen
Dentalium
giant clam
giant squid
giant Snail
giant octopus
Sepia
Loligo
Octopus
Mytilus
Pelecypoda
Scaphopoda
Bivalva
Gastropoda
Pila
Unio
Mytilus
Nautilus
Mikimoto
Katu
Haeckel
Von Mohl
Gastropoda
Caphalopoda
Bivalvia
Scaphopoda
prismatic layer
periostracum
nacre
mantle
Trochophore
Veliger
Glochidium
Muller's larva
Pila
Starfish
Housefly
Earthworm
Amphineve
Gastropoda
Scaphopoda
Caphalopoda
Pila
Aplysia
Helix
Aphrodite
pulmonary sac
ctenidia
book lungs
trachea
Octopus
Sepia
Mytilus
Teredo
devilfish
cuttlefish
black mussel
sea hare