A mollusk has chemosensory structures that resemble the ears of a hare. This mollusk can be:
1. Chaetopleura
2. Dentalium
3. Aplysia
4. Loligo

Development takes place through a trochophore or veliger larva in:
1. Annelida

2. Mollusca

3. Arthropoda

4. Echinodermata