The photosensitive sensory organ for a flatworm is a(n):
A)compound eye.
B)single-lens eye.
C)eyecup.
D)ommatidia.

Question

Quizplus · Accepted Answer

Flatworms have eyecups, which are simple photosensitive organs that detect changes in light intensity and direction. They do not have compound or single-lens eyes like many other animals do, nor do they have ommatidia, which are the individual units that make up the compound eyes of many arthropods.

The Photosensitive Sensory Organ for a Flatworm Is A(n)