How does brain size vary among the different vertebrate lineages?
A) Only primates evolved an expansion of the cerebral cortex.
B) Tetrapods evolved a larger cerebellum after moving onto land.
C) Mammals evolved an expansion of the cerebral cortex.
D) Tetrapods evolved a larger optic tectum after moving onto land.

Question

Quizplus · Accepted Answer

Mammals, including primates as a subgroup, are known for having evolved an expansion of the cerebral cortex, which is associated with higher cognitive functions. This trait is not exclusive to primates but is a characteristic of mammals in general.

How Does Brain Size Vary Among the Different Vertebrate Lineages