1. Meta-nephridium
2. Radulae
3. Palp
4. Ctenidium
Radulae
1. Shell of two valves
2. Asymmertical due to torsion
3. Presence of ctenidia
4. Mostly marine
Shell of two valves
1. Chiton
2. Teredo
3. Pinctada
4. Unio
Teredo
1. Pila
2. Helix
3. Teredo
4. Limax
Limax
1. Pinctada
2. Unio
3. Octopus
4. Pecten
Pinctada
1. Loligo
2. Sepia
3. Octopus
4. All the above
Octopus
1. herbivorous
2. carnivorous
3. omnivorous
4. scavengers.
carnivorous
1. releasing a dark coloured ink form an ink producinh gland
2. force water out of ventral tubular funnel
3. Both A+B
4. lie passively and do not react.
Both A+B
1. Pelecypoda
2. Aplacophora
3. Monoplacophora
4. Polyplacophora
Aplacophora
1. open
2. closed
3. reduced
4. lacking
open