The primate emphasis on the visual sense is reflected all of the following excepta. the presence of color vision in most species.b. the reduction in the size of structures related to the sense of smell.c. visual information from each eye transmitted to visual centers in both hemispheres.d. lack of color vision in most species. e. a more forward facing position of the eyes relative to most other mammals.
The correct answer is d
The correct answer is d. lack of color vision in most species. The primate emphasis on the visual sense is reflected in several ways, but one of the key features is the presence of color vision in most species. Unlike many other mammals, primates have developed the ability to perceive a wide range of colors through specialized photoreceptor cells called cones in their retina. This allows them to distinguish different colors, leading to enhanced visual perception.
Other characteristics that reflect the primate emphasis on the visual sense include:
a. The presence of color vision in most species: As mentioned above, primates have evolved the ability to perceive colors, which aids in various functions such as finding ripe fruits or identifying potential mates.
b. The reduction in the size of structures related to the sense of smell: Primates, compared to other mammals, have a reduced reliance on their sense of smell. This is reflected in the fact that compared to other mammals, primates tend to have smaller olfactory regions in their brain and a reduced size of structures such as the olfactory bulb.
c. Visual information from each eye transmitted to visual centers in both hemispheres: Primates, including humans, have a well-developed visual system that involves the transmission of visual information from each eye to both hemispheres of the brain. This allows for better depth perception and the integration of visual information from both eyes.
e. A more forward-facing position of the eyes relative to most other mammals: Primates typically have eyes that are located closer to the front of their face, which leads to binocular vision. This adaptation allows for better depth perception and the ability to judge distances accurately.
To summarize, while the primate emphasis on the visual sense is reflected in several ways, the lack of color vision in most species is not one of them. Instead, primates have evolved color vision, reduced reliance on the sense of smell, the transmission of visual information to both hemispheres, and a forward-facing position of the eyes.
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