Insects Have ____

Question

Insects have ____.  
A) simple eyes
B) ocelli
C) ciliary eyes
D) compound eyes
E) "camera" eyes

Accepted Answer

Insects have compound eyes, which are made up of many individual lenses that allow them to see movement and perceive their surroundings in a mosaic-like manner. Simple eyes (A) are found in some invertebrates and are a single lens that can detect light and dark but cannot form detailed images. Ocelli (B) are simple eyes found in some insects and are sensitive to light intensity and direction but do not form images. Ciliary eyes (C) are found in some mollusks and are similar to vertebrate eyes, while "camera" eyes (E) are found in some higher animals such as humans and are structurally different from compound eyes.