3 Written Questions

1. marine predators
2. evolutionary developments
3. bristles, assit in movement, 4 pairs found on each segment

3 Multiple Choice Questions

1. leeches
   1. setae
   2. coelom
   3. hirundenae
   4. polychaeta
2. pressure acts as skeleton, fluid filled cavity
   1. coelom
   2. oligochaetea
   3. polychaeta
   4. hydrostatic skeleton
3. diffusuin, gas exchange, no energy required, water can pass in and out of worm
   1. digestive track
   2. hydrostatic skeleton
   3. oligochaetea
   4. respiration through skin

3 True/False Question

1. oligochaetea → earthworm
   

   True        False

2. closed circulatory system → evolutionary developments
   

   True        False

3. digestive track → no digestion, runs length of the earthworm
   

   True        False