11 Questions for Review 1 Complete Summary Table A-1 in the Appendo, fling in th

Question

11 Questions for Review 1 Complete Summary Table A-1 in the Appendo, fling in the characteristics of both bivalves (dams) and cephalopods squid) in the appropriate rows 2 What are the four major characteristic features of molluscs? 1. 2. 3. 3 How does the foot of a bivalve differ from the foot of a cephalopod, or the foot of a snal? in what ways do these differences reflect specific edaptations for each animal to its unique lifestyle? 4 uist at least three features of squid that contribute to their success as predators 1. 2. 3. 5 What are some advantages of freshwater dlams producing parasitic larvae that attach to the glls of fish? Molluscs CHAPTER 11 219

Explanation / Answer

2) a) Unsegment soft body

b) Muscular foot and tentacles are present

c) Unsegment soft body structure

d) Have mantle in its body

3) In bivalve the foot is of bladelike structure which is laterally compressed and is pointed in structure. This pointed structure helps to dig and borrow the soil

In cephalopod the foot is flat creeping muscular sole and helps in locomotion and not in digging

4) a. shooting out its long tentacles to trap its prey

b. Radular is present, which is a conveyor belt of teeth helps to tear up the meat

c. Its bites with its sharp beak

5) The advantages of freshwater clams is to allows the dispersed of those larvae which are not been distributed to its places under normal circumstances

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