Answer :
Final answer:
The group of primates with the most primitive physical features is the prosimians, which include lemurs and tarsiers. They are smaller and exhibit less specialization compared to anthropoids, such as monkeys and apes. This makes prosimians significant in studying the early evolution of primates.
Explanation:
Primitive Features in Primates
The group of primates that display the most primitive physical features are the prosimians. This group includes species such as lemurs, bush babies, and tarsiers. Prosimians are considered to be more ancient relatives of modern primates, and they have characteristics that are less specialized compared to anthropoids, which include monkeys, apes, and humans.
Prosimians tend to be smaller in size with smaller brains and are often nocturnal, relying more on their keen sense of smell than on vision compared to other primates. In contrast, anthropoids are generally larger, have more complex social structures, and exhibit a wider range of adaptations.
For example, while New World monkeys and Old World monkeys, as well as apes, display advanced traits like greater brain size and behavioral complexity, prosimians retain features that reflect the early evolutionary stages of primates.
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