what structure is modified in crayfish
Purpose: Background: Like all crustaceans, a crayfish has a fairly hard exoskeleton that covers its body. As shown in the diagram on the next page, its body is divided into two main parts, the cephalothorax and the abdomen.ow turn the crayfish ventral side up. Observe the location of each pair of appendages from the ventral side. 9. On the last abdominal segment, observe a pair of pointed appendages modified into a pair of uropods. In the middle of the uropods, locate the triangular-shaped telson.