Unformatted text preview: 2. How does the function of the gills in Bivalvia differ from that in Cephalopoda? Why don't the terrestrial slugs and snails (Gastropoda) have gills? What sort of breathing apparatus would you expect to find in Polyplacophora? Hint: See Chapter 33, pp. 725-727. 3. Give the common names for each of the mollusk classes below. Mollusk class Common name(s) Bivalvia Cephalopoda Gastropoda Polyplacophora 4. What is a radula used for? What structure in cephalopods represents a modified radula? Why do bivalves lack a radula?...
View Full Document
- Spring '10
- Biology, Bivalvia Cephalopoda Gastropoda Polyplacophora, Bivalvia Cephalopoda Gastropoda, Mollusca Morphological changes