The protozoan Euglena moves by beating its flagellum. When the eyespot is shaded, the motion of the flagellum alters in a manner that tends to make the organism move toward the light source.
The protozoan Euglena moves by beating its flagellum. When the eyespot is shaded, the motion of the flagellum alters in a manner that tends to make the organism move toward the light source. |
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| Adapted from C Oyster The human eye: structure and function, 1999. |