A Key Difference Between Bivalves and Gastropods Is That

question 52

Multiple Choice

A key difference between bivalves and gastropods is that

• A) bivalves have a one-part shell, gastropods have a two-part shell.
• B) bivalves take in food through an incurrent siphon, gastropods filter food with their gills.
• C) bivalves are found only in marine environments, gastropods only occur in freshwater.
• D) all bivalves have a shell, not all gastropods have a shell.
• E) bivalves move by means of a muscular foot, gastropods move by via ciliated gills.

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