Question

question 20 of 20 : select the best answer for the question. 20. some jellyfish have skeletons that are formed by fluid - filled compartments. this fluid resists compression and thus supports the body structure from deforming. which term describes these skeletons?
a. hydrostatic skeletons
b. fluid skeletons
c. exoskeleton
d. endoskeleton
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Explanation:

To solve this, we analyze each option:

• Option A: Hydrostatic skeletons use fluid - filled compartments where the fluid resists compression to support the body, matching the jellyfish's skeleton description.
• Option B: "Fluid skeletons" is not a standard biological term for this structure.
• Option C: Exoskeletons are hard, external structures (like in insects), not fluid - filled compartments.
• Option D: Endoskeletons are internal, rigid structures (like in vertebrates), not fluid - based.

Answer:

A. Hydrostatic skeletons