3a. What are the parts of the tail of the crayfish? How does thecrayfish use its tail? How can this be important in survival?
3b. How many pairs of walking legs (counting the chelipeds) doesthe crayfish have? The walking legs, like the other appendages,demonstrate the principle of serial homology. Use the study guideto explain this principle.
3c. What are the three pairs of appendages that handle food andbring it to the mouth? What are the hard, jaw like structures? Howdo they work in the crayfish?
