AP BIOLOGY

Detailed explanation-1: -Prosimians are a group of primates that includes all living and extinct strepsirrhines (lemurs, lorisoids, and adapiforms), as well as the haplorhine tarsiers and their extinct relatives, the omomyiforms, i.e. all primates excluding the simians.

Detailed explanation-2: -Prosimians rely more on olfactory communication than do other primates. They are believed to have functional vomeronasal organs that help them to detect olfactory cues (Smith et al. 2015).

Detailed explanation-3: -Abstract. Prosimians have smaller brains relative to their body sizes than do monkeys. Brain and body weights, however, are associated not only on the basis of the brain integrating sensorimotor functions, but also on the basis of the body’s requirement to support the energetic needs of the brain.

Detailed explanation-4: -In behavioral experiments, biologists have now found that chimpanzees use olfaction as a prime mode of investigation, and that they recognize group members and kin using olfactory cues.