1 Earthworm_Essay1_Function of Clitellum
TOPIC 1: What is the function of the clitellum?
2 Earthworm_Essay2_Dorsal vs. Ventral Sides
TOPIC 1: What external features allowed you to identify the
dorsal and ventral sides of the earthworm?
3 Earthworm_Essay3_Description of Earthworm Locomotion
TOPIC 2: Write your description of earthworm locomotion from
your records here.
4 Earthworm_Essay4_Prostomium during Movement
TOPIC 2: What is the prostomium doing while the earthworm is
5 Earthworm_Essay5_Labeled Cross Section Image(s)
TOPIC 3: Upload your labeled earthworm cross section slide
6 Earthworm_Essay6_Typhlosole Structure vs. Function
TOPIC 3: How does the structure of the typhlosole relate to its
7 Earthworm_Essay7_Labeled Earthworm Seta Image
TOPIC 3: Upload your labeled earthworm seta image here.
8 Earthworm_Essay8_Setae Location vs. Function
TOPIC 3: On which side of the earthworm are the setae
located? How does that placement relate to their function?
9 Earthworm_Essay9_Labeled Longitudinal Anterior Image
TOPIC 4: Upload your labeled earthworm longitudinal anterior
slide image here.
10 Earthworm_Essay10_Labeled Longitudinal Reproduction
TOPIC 4: Upload your labeled earthworm circulatory and
reproductive systems longitudinal section slide image here.
11 Earthworm_Essay11_Earthworm Seminal Vesicles
TOPIC 4: If you were only able to observe seminal vesicles in
the slide, would that mean that the earthworm is male? Please
12 Earthworm_Essay12_Labeled Longitudinal Digestion Image
TOPIC 4: Upload your labeled earthworm digestive system
longitudinal section slide image here.
13 Earthworm_Essay13_Musculature of Crop vs. Gizzard
TOPIC 4: 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?
14 Earthworm_Essay14_Labeled Earthworm Septa Image
TOPIC 4: Upload your labeled earthworm septa image here.
15 Earthworm_Essay15_Earthworms’ Ecosystem Contribution
CONCLUSIONS: How do earthworms contribute to the
16 Earthworm_Essay16_Earthworm Segmentation Displays
CONCLUSIONS: What are two ways that earthworms display
17 Earthworm_Essay17_Benefit of Earthworm Color
CONCLUSIONS: Focusing on the color of earthworms, how
might this feature benefit the organism in its natural habitat?
18 Earthworm_Essay18_Internal Dorsal vs. Ventral Features
CONCLUSIONS: What internal features allow you to identify
the dorsal and ventral sides of the earthworm?
19 Earthworm_Essay19_Axis of Symmetry
CONCLUSIONS: 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 diagrams in the Background and
Procedures of the lab and observe the bilateral symmetry of the
In what direction does the axis of symmetry run? Think about
which cut-through of the animal will leave mirror-image halves.
20 Earthworm_Essay20_Earthworm Waste Excretion
CONCLUSIONS: What are the two methods that an earthworm
uses to excrete waste?
21 Earthworm_Essay21_Earthworm “Sensory Organs”
CONCLUSIONS: What is the closest an earthworm has to
sensory organs such as ears or a nose?
22 Earthworm_Essay22_Earthworm “Respiratory Organs”
CONCLUSIONS: Did you observe any respiratory organs, such
as lungs or gills, in any of the earthworm slides? Why or why
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