Name: _________________ _________________ Block: __________ Date: _____________________________
Biology 11
Annelid Worksheet #1: Oligochaeta
1. Use each of the terms below just once to complete the passage. (7 marks)
Annelida
Parapodia
Bristleworms
Segments
Earthworms
Setae
Muscles
Members of the phylum _______________________ all have bodies made up of multiple
__________________________. Each segment has its own ______________________ that function to
lengthen and shorten the worm’s body. When present, bristle-like __________________ act as
anchors while the worm is moving along. In ____________________________, each segment has a
pair of ___________________________. The most familiar annelids are probably
________________________.
2. Label the diagram below. (5 marks)
Name: _________________ _________________ Block: __________ Date: _____________________________
3. What function does the coelom of the earthworm perform? (1 mark)
4. Why are earthworms classified as Oligochaeta? (1 mark)
5. What are setae and parapodia? (2 marks)
6. Describe the location and function of nephridia in earthwroms. (2 marks)
7. Describe the fuctions of the crop, gizzard, and intestine of earthworms. (3 marks)
8. What is the function of aortic arches? (1 mark)
9. What is the advantage of being hermaphroditic to earthworms? (1 mark)