True or False. Earthworms have a hydrostatic skeleton.Group of answer choicesTrueFalse
Question
True or False. Earthworms have a hydrostatic skeleton.
Group of answer choices
- True
- False
Solution
Answer
True.
Earthworms do indeed possess a hydrostatic skeleton. This type of skeleton is formed by the fluid-filled coelom, which is surrounded by muscles. The pressure of the fluid within the coelom allows the earthworm to maintain its shape and provides support for movement. When an earthworm contracts its circular muscles, the fluid pressure increases, causing the body to elongate. Conversely, when it contracts its longitudinal muscles, the body shortens. This unique structure allows earthworms to burrow through soil efficiently, contributing to their adaptability in various environments. In summary, the hydrostatic skeleton is essential for their locomotion and overall structural integrity.
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