Primates Have an Enhanced Sense of Vision

question 2

Multiple Choice

Primates have an enhanced sense of vision.How do primatologists think this evolved?

• A)Primate eyes converged toward the front of the skull,giving enhanced depth perception.Later,nocturnal primates shifted to become diurnal,and in this context,color vision evolved.
• B)Primates were initially diurnal,but later went through a nocturnal phase.The requirements of being able to see in limited light caused primates to have excellent vision.
• C)The nocturnal ancestors of primates used color vision to identify edible insects and fruits.
• D)As primates became larger and more diurnal,predation pressure increased,so enhanced vision was selected for to spot and avoid predators.