Unformatted text preview: distinct, and well-developed / indistinct and poorly developed / non-existent . answer indistinct and poorly developed 6. Bivalves have / lack a mantle. answer have 7. Bivalves are dioecious / hermaphroditic / some are dioecious others are hermaphroditic . answer some are dioecious others are hermaphroditic 8. Gastropods live in terrestrial / freshwater and marine / terrestrial, marine and freshwater habitats. answer terrestrial, marine and freshwater...
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- Spring '08
- Siphon, Filter feeder, Scallop, freshwater habitats