BIOLOGY
BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 45, Problem 2U

Worms use a hydrostatic skeleton to generate movement. How do they do this?

a. Their bones are filled with water, which provides the weight of the skeleton.

b. The change in body structure is caused by contraction of muscles compressing the watery body fluid.

c. The muscles contain water vacuoles, which, when filled, provide a rigid internal structure.

d. The term hydrostatic simply refers to moist environment. They generate movement just as arthropods do.

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