Answer: Characteristics of solitary primates are:
1)Interaction between adult males and adult females occurs only for sexual activity.
2)Sexual dimorphism is high.
Explanation:
1)Interaction between adult males and adult females occurs only for sexual activity: Males that have not been successful in finding a mate often become even more solitary than their more successful counterparts.
2)Sexual dimorphism is high: Orangutan males are twice the size of females and have large canines and cheek pads.