Name ______________________________________________________________
Date ______________________________________ Per. _________________
Question: How do earthworms meet all the challenges of living on land?
Background:
1. What are the 7 jobs that an animal must perform in order to survive?_______________________________________
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2. What is an Annelid? _______________________________________________________________________________
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3. What is a coelom? ________________________________________________________________________________
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4. How are earthworms beneficial? _____________________________________________________________________
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In each of these dissection labs you are going to observe the structures that allow an animal
to perform the jobs that you listed above. When studying the structures in an animal, you are
studying that animal’s
When studying how the structures in an animal works,
you are studying that animal’s
As you perform each of these dissections,
your objective will be to understand the relationship between anatomy and physiology.
In the space below, diagram your worm.
Label it with it the underlined words from the directions sheet.
External Anatomy
Results
Conclusion
1. Among the earthworm’s structural adaptations are its setae. How do you think the earthworm’s setae make it well
adapted to its habitat?________________________________________________________________________________
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2. Your dissection of the earthworm did not go beyond segment 32.What will you observe if you dissect the remainder
of the worm to its posterior end? _______________________________________________________________________
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3. You may have noticed that there were no lungs in the earthworm. How do you think it gets the oxygen that it needs
to perform cellular respiration? ________________________________________________________________________
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4. Why is the circulatory system of an earthworm considered a closed system? _________________________________
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5 Choose any three systems and explain how they work together to keep the earthworm alive. ____________________
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6. Color code the systems on the diagram above. Use green for the reproductive system, yellow for the digestive
system, blue for the excretory system, orange for the nervous system, and red for the circulatory system.