The brains of all mammals have a unique layer of nerve cells covering the cerebrum. This layer is called the neocortex (the pink region of the brains in Figure above ). The neocortex plays an important role in many complex brain functions. In some mammals, such as rats, the neocortex is relatively smooth. In other mammals, especially humans, the neocortex has many folds. The folds increase the surface area of the neocortex. The larger this area is, the greater the mental abilities of an animal.
Sam works in a biology lab. Today he is studying the brains of different mammals. In particular he is comparing the brain of an Ape to the brain of a rabbit. The rabbits and Ape both have a neocortec covering the cerebrum. However Sam noticed that the neocortex of the rabbit was much smother than the neocortex of the ape. I
Which animal's brain can carry out fewer complex functions?