| 1. | Body of Arthropoda is segmented. | Body of Mollusca is unsegmented. |
| 2. | Arthropoda have jointed legs. | Mollusca do not have jointed legs. |
| 3. | Arthropoda have exoskeleton. | Mollusca have coiled shell. |
| 4. | For example — spider and ant. | For example — octopus and snail. |