ANALYZING DATA (Not in Your Book, You Must THINK)

Reading 27-3 Name______

1. Annelids are probably more closely related to ______and snails than they are to roundworms. 2. The Latin word “annellus” means ______3. What are septa? ______4. What are setae? ______5. Annelids are worms with ______bodies. They have a true ______that is lined with tissue derived from the mesoderm. 6. Name two ways that annelids can get their food: ______7. What type of annelid has jaws to capture prey? ______8. In earthworms, what is the job of the pharynx? ______9. Once food enters the earthworm, it goes to two structures: ______(where food is stored) ______( grinds food ) 10. What type of circulatory system do annelids have? ______11. What are the two major blood vessels in the earthworm? ______12. How do feather duster worms get oxygen? ______13. How do land dwelling annelids (like the earthworm) get oxygen? ______14. Excretory organs that that eliminate cellular waste: ______15. Do annelids have a brain? ______16. What type of skeleton do annelids have? ______17. What are the two sets of muscles that help the worm move? ______18. Paddlelike appendages found on marine worms are called ______19. In earthworms, the ______secretes a mucus ring where sperm and eggs are released. 20. What class of annelids contain the earthworms and their relatives? ______21. What is an earthworm casting? ______22. What type of annelids belong to the class Hirudenea? ______23. How do members of this class get their food? ______24. Leeches can either bite their hosts or insert a muscular ______into the tissues. 25. What are two ways in which leeches are used in modern medicine? ______26. Polychaetes are ______annelids that have paired, paddlelike appendages. 27. What did Aristotle call earthworms? ______28. Name one way that earthworms help the soil?______29. Name two animals that eat earthworms: ______30. Marine annelids are numerous in areas where ______promotes bacterial growth.

ANALYZING DATA (not in your book, you must THINK)

1. The forest location had more castings than the swamp location in both 1990 and 2007. True False

2. In all locations, the number of castings declined. True False

3. The field had about _____ castings in 1990, and about _____ castings in 2007.

4. The data implies that: a. the number of earthworms is declining b. the number of earthworms is increasing c. the number of earthworms is constant and depends on the location