Question

what function does the cuticle perform for nematodes? structure movement defense mechanism

Explanation:

Nematodes' cuticle serves as a defense mechanism. It protects them from environmental stresses, pathogens, and physical damage. The cuticle is a tough outer layer that acts as a barrier, so "Defense Mechanism" is the correct function here. "Structure" is too vague, and while it relates to movement (by providing a surface for muscle attachment), its primary protective role makes "Defense Mechanism" the best choice.

Answer:

Defense Mechanism