Question

What is found in primates’ brains?
A. Cerebellum
B. Diencephalon
C. Neopallium cortex
D. Optic lobes

Answer 1

Hint: Primata is an order of the subclass eutheria. Eutheria is a classification of the class mammalia that belongs to the phylum chordata or vertebrata. Primates are those animals in which the females have menstrual cycles.

Complete answer: The neocortex is made up of two words, Neo meaning new, and cortex. It is also known as the neopallium where neo means new and pallium means cloak. It is also called isocortex, where Iso means the same, and cortex. It is the six-layered cortex. It is the set of layers of the cerebral cortex of mammals. Neocortex performs functions like sensory perception, generation of motor commands, cognition, spatial reasoning, and language, etc. It is further classified as True isocortex and proisocortex. The neocortex comprises a grey matter surrounding the white matter in the cerebrum present in the brain. It is 2-4 mm thick. The pro isocortex area of the neocortex is basically the transitional area between the true isocortex and the allocortex. The neocortex is the largest part of the brain’s cerebral cortex. The cerebral cortex is known to be the outermost layer of the cerebrum present in the brain. All the rest of the part is the allo cortex. Thus, based on the above information, the Neopallium cortex is found in the primates’ brains.
Hence, the correct answer is option (C).

Note: All the above-mentioned options are found in the brains of the primates. However, the neopallium cortex is the most suitable and apt answer because it is exclusively present in the brain of mammals. The other structures are present in the brain of almost all the animals across the various phylum.