The hypothesis that nematomorphs lack these structures is supported by a 2023 paper by Tauana J. Cunha et al., which finds that both species studied lack most conserved eukaryotic genes for these structures. These non-molecular structures are affected by dye-filling mutations like dyf-5. In C. elegans, ADF and ADL cells are named for “dual” pairs featuring these structures. Four of these structures from wing cells do not continue into a cuticle pore via a socket cell after twelve of them pass through the lumen of a sheath cell in an (*) amphid. Flame cells in protonephridia are distinguished from solenocytes by a form of these structures. (10[1])In C. elegans, the ends of the dendrites of sixty sensory neurons feature the “primary,” or “non-motile,” type (10[1])of these structures. (10[1])For 10 points, name these ubiquitous (10[1])small (10[1])cellular protrusions (10[1]-5[1])that are often involved in cell locomotion. (10[1])■END■ (10[2])