2 Written Questions

1. bristle-like structures that help segmented worms move
2. The excretory organ of many invertebrates, consisting of a tubule with one end opening into the body cavity and the other opening into a pore at the body surface.

2 Multiple Choice Questions

1. transport system in which body fluids are always found within a vessel
   1. Coelom
   2. Bilateral Symmetry
   3. Closed Circulatory System
   4. Nephridia
2. worms with cylindrical bodies segmented both internally and externally
   1. Annelid
   2. Setae
   3. Nephridia
   4. Coelom

2 True/False Question

1. Coelom → fluid-filled body cavity that forms between the body wall and the digestive tract, a body cavity that contains the internal organs, a body cavity that contains the internal organs
   

   True        False

2. Bilateral Symmetry → body plan in which only a single, imaginary line can divide the body into two equal halves; characteristic of worms, arthropods, and chordates
   

   True        False