Questions and Answers
What is a subdivision within the primate order that includes lemurs and lorises?
What is a subdivision within the primate order that includes tarsiers, New World monkeys, Old World monkeys, and apes?
Where do Strepsirhines live?
Africa/Asia
Where do Haplorhines live?
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Which group has a tooth claw and grooming claw?
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Which group has a Tapetum lucidum for night vision?
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Strepsirhines have a post-orbital bar but no closure.
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Haplorhines rely heavily on olfaction for smell.
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Which group tends to have long snouts?
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Which group relies heavily on scent and has scent glands?
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Strepsirhines are primarily diurnal.
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Strepsirhines have two halves of the mandible that are unfused.
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Strepsirhines have small brains.
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Strepsirhines are solitary species and thrive being alone.
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Strepsirhines tend to be carnivores.
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Haplorhines are typically non-nocturnal.
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What is the only nocturnal Haplorhine?
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Haplorhines rely heavily on vision.
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Haplorhines have a post-orbital bar and closure.
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Haplorhines have two halves of the mandible that are unfused.
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Haplorhines have large brains.
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Haplorhines tend to be more social.
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Study Notes
Strepsirhines
- Subdivision of the primate order, encompassing lemurs and lorises.
- Primarily found in Africa and Asia.
- Possess a tooth claw and grooming claw.
- Feature a Tapetum lucidum, enhancing low-light vision.
- Characterized by a post-orbital bar with no closure.
- Rely on an olfactory bulb for the sense of smell.
- Have long snouts, enabling better olfactory capabilities.
- Utilize scent glands and depend heavily on scent for communication.
- Mostly nocturnal, adapted to nighttime activity.
- Possess unfused mandible halves.
- Generally exhibit smaller brain sizes compared to haplorhines.
- Many species are solitary, thriving alone in their habitats.
- Mostly insectivorous, feeding primarily on insects.
Haplorhines
- Subdivision of the primate order, including tarsiers, New World monkeys, Old World monkeys, and apes (including humans).
- Their geographic range extends to Africa, Asia, South America, and Central America.
- Largely non-nocturnal, with a few exceptions (e.g., night monkeys).
- Heavily reliant on visual faculties for interaction with their environment.
- Possess both a post-orbital bar and closure in the skull.
- Feature fused mandible halves, contributing to a different jaw structure.
- Generally have larger brains, providing advanced cognitive abilities.
- Tend to be more social, often forming complex social structures.
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Description
Explore the key characteristics of Strepsirhines and Haplorhines, two major subdivisions of primates. This flashcard quiz will help you understand their unique traits and habitats, allowing for a deeper insight into evolutionary relationships within the primate order.
