long, thin, contractile rods that appear to be responsible for the movement of the cells (both external and internal movement) cilia short, hair-like projections that function in cell movement, consists of a membrane-bound cylinder, with 9+2 arrangement of microtubules flagella longer than cilia...
rods 2 main types of photoreceptors in the eye: Black and white cones Cone-shaped visual receptor cells; located in retina; works best in bright light; responsible for viewing color; greatest density in the fovea fovea The central focal point in the retina, around which the eye's cones clus...