Earthworms have no skeleton, but during burro | vedclass

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Question

(C) The correct answer is $C$.$1$. $A$ hydraulic skeleton is a support system found in soft-bodied invertebrates that relies on the incompressibility

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coelomic fluid

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(C) The correct answer is $C$.$1$. $A$ hydraulic skeleton is a support system found in soft-bodied invertebrates that relies on the incompressibility of fluids contained within the body cavity.$2$. In earthworms, the coelomic fluid is under pressure within the coelom, which provides structural support for internal organs.$3$. During the process of burrowing, this coelomic fluid makes the anterior end turgid, allowing it to act as a hydraulic skeleton that aids in the movement and penetration of the soil.

Earthworms have no skeleton, but during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton. This is due to:

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