Question

how much eye flatworm have

Answer 1

100 # .............. ...

Answer 2

Flatworms have prominent eyespots. These constitute the flatworm's most prominent sensory organs. However, while the eyespots resemble eyes, the organs are much more simple. Eyespots consist of a single layer of photosensitive cells. The photosensitive cells contain a pigment that reacts to light, and signal nerve cells when they do so. The eyespots have no lenses to focus images. Due to their simplicity, eye spots cannot produce images. Instead, the eyespots can only tell light from dark.