Earthworm Dissection Worksheet
A Grade 11 science worksheet covering earthworm dissection, focusing on external and internal anatomy, and physiological functions.
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Earthworm Dissection Worksheet
Name:
Date:
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Carefully read each question and provide detailed answers based on your knowledge of earthworm anatomy and physiology. Refer to diagrams where necessary.
1. Observe the external features of the earthworm shown below. Identify and label the clitellum, mouth, anus, and setae.
2. Which of the following best describes the function of the clitellum in an earthworm?
Locomotion
Reproduction (cocoon formation)
Digestion
Respiration
3. Examine the provided diagram of the earthworm's internal anatomy. Identify and briefly describe the function of the following organs:
Pharynx:
Esophagus:
Crop:
Gizzard:
Intestine:
Aortic Arches (Hearts):
4. Earthworms have an open circulatory system.
True
False
5. Earthworms are hermaphroditic, meaning they possess both male and female reproductive organs.
True
False
6. Describe the role of the typhlosole in the earthworm's digestive system.
7. Explain how earthworms contribute to soil health and aeration.
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