Earthworm Lab Report Solution solved

Earthworm Lab Report Solution solved



Earthworm Lab Report Questions

1. Match the labels from the diagram with the correct term



2. What advantage is gained by the epiphysis being formed of spongy bone?

3. What advantage is derived from the articular cartilage?



4. What is the Axial Skeleton?



5. What bones actually make up your “backbone”?



6. Ribs form the walls to protect what area of your body?





7. What is the appendicular skeleton?



8. The pectoral girdle is made of what bones?



9. What does “articulates with” mean in Biology?



10. Give the correct biological term for each of the following:



11. Match the labels from the diagram with the correct term.



12. What is the fibrous joint in the skull called?



13. What are the cartilage pads of the spine called?



14. What type of movement does a cartilaginous joint allow?



15. What type of synovial joint is the shoulder?



16. List the 3 types of muscle tissue, giving an example of where each type is found in your body.



17. The functional unit of a muscle myofibril is what? (Which part actually does all of the contracting?)



18. Explain the “sliding filament theory” of muscle contraction.





19. What contracts to make the worms become long and thin?



20. What contracts to make the worms become short and fat?



21. How does a worm grip a surface to allow it to move along?



22. What type of skeleton does the worm possess?



23. Label the earthworm.



What is the function of the clitellum?


What external features allowed you to identify the dorsal and ventral sides of the earthworm?
Write your description of earthworm locomotion from your lab notes here.
What is the prostomium doing while the earthworm is moving?
Drag your labeled earthworm cross section slide image(s) from your portfolio and drop it (them) here.
How does the structure of the typhlosole relate to its function?
Drag your labeled earthworm setae image from your portfolio and drop it here.
On which side of the earthworm are the setae located? How does that placement relate to their function?
On which side of the earthworm are the setae located? How does that placement relate to their function?
Drag your labeled earthworm longitudinal reproduction slide image from your portfolio and drop it here
If you were only able to observe seminal vesicles in the slide, would that mean that the earthworm is male? Explain.
Drag your labeled earthworm longitudinal digestion slide image from your portfolio and drop it here.
Do you see any differences between the musculature of the crop and that of the gizzard? If yes, how does this difference relate to the function of each?
Drag your labeled earthworm septa image from your portfolio and drop it here.
How do earthworms contribute to the ecosystem?
What were two ways that earthworms display segmentation?
Focusing on the color, how might this feature benefit the organism in its natural habitat?
What internal features allow you to identify the dorsal and ventral sides of the earthworm?
The earthworm does not have large appendages to display bilateral symmetry the way that, say, a human has right and left arms. The earthworm has a bilateral plan. This plan is easiest to visualize if you examine the earthworm cross-section diagram in the Media Player and observe the bilateral symmetry of the interior organs.
In what direction does the axis of symmetry run? Think about which cut-through of the animal will leave mirror-image halves.
What are the two methods that an earthworm uses to excrete waste?
What is the closest an earthworm has to sensory organs like ears or a nose?
Did you observe any respiratory organs, like lungs or gills, in any of the earthworm slides? Why or why not?







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